ruined walls, the débris of palatial structures which at one time were the glory and wonder of the East. Of these structures indeed some have survived to the present day in a sufficiently perfect state to bear witness to the grandeur and beauty of the old architecture of Herat. Such was the mosque of the Mosalla before its destruction. Scarcely inferior in beauty of design and execution, though of more moderate dimensions, is the tomb of the saint Abdullah Ansari, in the same neighbourhood. This building, which was erected by Shah Rukh Mirza, the grandson of Timur, over 500 years ago, contains some exquisite specimens of sculpture in the best style of Oriental art. Adjoining the tomb also are numerous marble mausoleums, the sepulchres of princes of the house of Timur; and especially deserving of notice is a royal building tastefully decorated by an Italian artist named Geraldi, who was in the service of Shah Abbas the Great. The locality, which is further enlivened by gardens and running streams, is named Gazir-gáh, and is a favourite resort of the Heratis. It is held indeed in high veneration by all classes, and the famous Dost Mahommed Khan is himself buried at the foot of the tomb of the saint. Two other royal palaces named respectively Bagh-i-Shah and Takht-i-Sefer, are situated on the same rising ground somewhat farther to the west. The buildings are now in ruins, but the view from the pavilions, shaded by splendid plane trees on the terraced gardens formed on the slope of the mountain, is said to be very beautiful.

The population of Herat and the neighbourhood is of a very mixed character. The original inhabitants of Ariana were no doubt of the Aryan family, and immediately cognate with the Persian race, but they were probably intermixed at a very early period with the Sacae and Massagetae, who seem to have held the mountains from Kabul to Herat from the first dawn of history, and to whom must be ascribed-rather than to an infusion of Turco-Tartaric blood introduced by the armies of Jenghiz and Timur-the peculiar broad features and flattish countenance which distinguish the inhabitants of Herat, Seistan and the eastern provinces of Persia from their countrymen farther to the west. Under the government of Herat, however, there are a very large number of tribes, ruled over by separate and semi-independent chiefs, and belonging probably to different nationalities. The principal group of tribes is called the ChaharAimák, or “four races," the constituent parts of which, however, are variously stated by different authorities both as to strength and nomenclature. The Heratis are an agricultural race, and are not nearly so warlike as the Pathans from the neighbourhood of Kabul or Kandahar.

The long narrow valley of the Hari Rud, starting from the western slopes of the Koh-i-Baba, extends almost due west for 300 m. before it takes its great northern bend at Enviroas Kuhsan, and passes northwards through the broken of Herat. ridges of the Siah Bubuk (the western extremity of the range which we now call Paropamisus) towards Sarakhs. For the greater part of its length it drains the southern slopes only of the Paropamisus and the northern slopes of a parallel range called Koh-i-Safed. The Paropamisus forms the southern face of the Turkestan plateau, which contains the sources of the Murghab river; the northern face of the same plateau is defined by the Band-i-Turkestan. On the south of the plateau we find a similar succession of narrow valleys dividing parallel flexures, or anticlinals, formed under similar geological conditions to those which appear to be universally applicable to the Himalaya, the Hindu Kush, and the Indus frontier mountain systems. From one of these long lateral valleys the Hari Rud receives its principal tributary, which joins the main river below Obeh, 180 m. from its source; and it is this tributary (separated from the Hari Rud by the narrow ridges of the Koh-i-Safed and Band-iBaian) that offers the high road from Herat to Kabul, and not the Hari Rud itself. From its source to Obeh the Hari Rud is a valley of sandy desolation. There are no glaciers near its sources, although they must have existed there in geologically recent times, but masses of melting snow annually give rise to floods, which rush through the midst of the valley in a turbid red stream, frequently rendering the river impassable and cutting off the

crazy brick bridges at Herat and Tirpul. It is impossible, whilst watching the rolling, seething volume of flood-water which swirls westwards in April, to imagine the waste stretches of dry river-bed which in a few months' time (when every available drop of water is carried off for irrigation) will represent the Hari Rud. The soft shales or clays of the hills bounding the valley render these hills especially subject to the action of denudation, and the result, in rounded slopes and easily accessible crests, determines the nature of the easy tracks and passes which intersect them. At the same time, any excessive local rainfall is productive of difficulty and danger from the floods of liquid mud and loose boulders which sweep like an avalanche down the hill sides. The intense cold which usually accompanies these sudden northern blizzards of Herat and Turkestan is a further source of danger.

From Obeh, 50 m. east of Herat, the cultivated portion of the valley commences, and it extends, with a width which varies from 8 to 16 m., to Kuhsan, 60 m. west of the city. But the great stretch of highly irrigated and valuable fruit-growing land, which appears to spread from the walls of Herat east and west as far as the eye can reach, and to sweep to the foot of the hills north and south with an endless array of vineyards and melon-beds, orchards and villages, varied with a brilliant patchwork of poppy growth brightening the width of green wheat-fields with splashes of scarlet and purple-all this is really comprised within a narrow area which does not extend beyond a ten-miles' radius from the city. The system of irrigation by which these agricultural results are attained is most elaborate. The despised Herati Tajik, in blue shirt and skull-cap, and with no instrument better than a three-cornered spade, is as skilled an agriculturist as is the Ghilzai engineer, but he cannot effect more than the limits of his water-supply will permit. He adopts the karez (or, Persian, kanát) system of underground irrigation, as does the Ghilzai, and brings every drop of water that he can find to the surface; but it cannot be said that he is more successful than the Ghilzai. It is the startling contrast of the Herati oasis with the vast expanse of comparative sterility that encloses it which has given such a fictitious value to the estimates of the material wealth of the valley of the Hari Rud.

The valley about Herat includes a flat alluvial plain which might, for some miles on any side except the north, be speedily reduced to an impassable swamp by means of flood-water from the surrounding canals. Three miles to the south of the city the river flows from east to west, spanned by the Pal-i-Malun, a bridge possessing grand proportions, but which was in 1885 in a state of grievous disrepair and practically useless. East and west stretches the long vista of the Hari Rud. Due north the hills called the Koh-i-Mulla Khwaja appear to be close and dominating, but the foot of these hills is really about 3 m. distant from the city. This northern line of barren, broken sandstone hills is geographically no part of the Paropamisus range, from which it is separated by a stretch of sandy upland about 20 m. in width, called the Dasht-i-Hamdamao, or Dasht-i-Ardewán, formed by the talus or drift of the higher mountains, which, washed down through centuries of denudation, now forms long sweeping spurs of gravel and sand, scantily clothed with wormwood scrub and almost destitute of water. Through this stretch of dasht the drainage from the main water-divide breaks downwards to the plains of Herat, where it is arrested and utilized for irrigation purposes. To the north-east of the city a very considerable valley has been formed between the Paropamisus and the subsidiary Koh-i-Mulla Khwaja range, called Korokh. Here there are one or two important villages and a well-known shrine marked by a group of pine trees which is unique in this part of Afghanistan. The valley leads to a group of passes across the Paropamisus into Turkestan, of which the Zirmast is perhaps the best known. The main water-divide between Herat and the Turkestan Chol (the locss district) has been called Paropamisus for want of any well-recognized general name. To the north of the Korokh valley it exhibits something of the formation of the Hindu Kush (of which it is apparently a geo. logical extension), but as it passes westwards it becomes broken

into fragments by processes of denudation, until it is hardly | recognizable as a distinct range at all. The direct passes across it from Herat (the Baba and the Ardewán) wind amongst masses of disintegrating sandstone for some miles on each side of the dividing watershed, but farther west the rounded knolls of the rain-washed downs may be crossed almost at any point without difficulty. The names applied to this débris of a once formidable mountain system are essentially local and hardly distinctive. Beyond this range the sand and clay loess formation spreads downwards like a tumbled sea, hiding within the folds of its many-crested hills the twisting course of the Kushk and its tributaries.

66

a

History. The origin of Herat is lost in antiquity. The name first appears in the list of primitive Zoroastrian settlements contained in the Vendidad Sade, where, however, like most of the names in the same list,—such as Sughudu (Sogdiana), Mouru (Merv or Margus), Haraquiti (Arachotus or Arghand-ab), Haelumant (Etymander or Helmund), and Ragha (or Argha-stan),-it seems to apply to the river or river-basin, which was the special centre of population. This name of Haroyu, as it is written in the Vendidad,or Hariwa, as it appears in the inscriptions of Darius, is a cognate form with the Sanskrit Sarayu, which signifies river," and its resemblance to the ethnic title of Aryan (Sans. Arya) is purely fortuitous; though from the circumstance of the city being named "Aria Metropolis" by the Greeks, and being also recognized as the capital of Ariana, "the country of the Arians," the two forms have been frequently confounded. Of the foundation of Herat (or Heri, as it is still often called) nothing is known. We can only infer from the colossal character of the earth-works which surround the modern town, that, like the similar remains at Bost on the Helmund and at Ulan Robat of Arachosia, they belong to that period of Central-Asian history which preceded the rise of Achaemenian power, and which in Grecian romance is illustrated by the names of Bacchus, of Hercules and of Semiramis. To trace in any detail the fortunes of Herat would be to write the modern history of the East, for there has hardly been a dynastic revolution, or a foreign invasion, or a great civil war in Central Asia since the time of the prophet, in which Herat has not played a conspicuous part and suffered accordingly. Under the Tahirids of Khorasan, the Saffarids of Seistan and the Samanids of Bokhara, it flourished for some centuries in peace and progressive prosperity; but during the succeeding rule of the Ghaznevid kings its metropolitan character was for a time obscured by the celebrity of the neighbouring capital of Ghazni, until finally in the reign of Sultan Sanjar of Merv about 1157 the city was entirely destroyed by an irruption of the Ghuzz, the predecessors, in race as well as in habitat, of the modern Turkomans. Herat gradually recovered under the enlightened Ghorid kings, who were indeed natives of the province, though they preferred to hold their court amid their ancestral fortresses in the mountains of Ghor, so that at the time of Jenghiz Khan's invasion it equalled or even exceeded in populousness and wealth its sister capitals of Balkh, Merv and Nishapur, the united strength of the four cities being estimated at three millions of inhabitants. But this Mogul visitation was most calamitous; forty persons, indeed, are stated to have alone survived the general massacre of 1232, and as a similar catastrophe overtook the city at the hands of Timur in 1398, when the local dynasty of Kurt, which had succeeded the Ghorides in eastern Khorasan, was put an end to, it is astonishing to find that early in the 15th century Herat was again flourishing and populous, and the favoured seat of the art and literature of the East. It was indeed under the princes of the house of Timur that most of the noble buildings were erected, of which the remains still excite our admiration at Herat, while all the great historical works relative to Asia, such as the Rozetes-Sefa, the Habib-es-seir, Hafiz Abru's Tarikh, the Malla' a-esSa'adin, &c., date from the same place and the same age. Four times was Herat sacked by Turkomans and Usbegs during the centuries which intervened between the Timuride princes and the rise of the Afghan power, and it has never in modern times attained to anything like its old importance. Afghan

tribes, who had originally dwelt far to the east, were first settled at Herat by Nadir Shah, and from that time they have monopolized the government and formed the dominant element in the population. It will be needless to trace the revolutions and counter-revolutions which have followed each other in quick succession at Herat since Ahmad Shah Durani founded the Afghan monarchy about the middle of the 18th century. Let it suffice to say that Herat has been throughout the seat of an Afghan government, sometimes in subordination to Kabul and sometimes independent. Persia indeed for many years showed a strong disposition to reassert the supremacy over Herat which I was exercised by the Safawid kings, but great Britain, disapproving of the advance of Persia towards the Indian frontier, steadily resisted the encroachment; and, indeed, after helping the Heratis to beat off the attack of the Persian army in 1838, the British at length compelled the shah in 1857 at the close of his war with them to sign a treaty recognizing the further independence of the place, and pledging Persia against any further interference with the Afghans. In 1863 Herat, which for fifty years previously had been independent of Kabul, was incorporated by Dost Mahomed Khan in the Afghan monarchy, and the Amir, Habibullah of Afghanistan, like his father Abdur Rahman before him, remained Amir of Herat and Kandahar, as well as Kabul.

See Holdich, Indian Borderland (1901); C. E. Yate, Northern Afghanistan (1888). (T. H. H.*)

HÉRAULT, a department in the south of France, formed from Lower Languedoc. Pop. (1906) 482,779. Area, 2403 sq. m. It is bounded N.E. by Gard, N.W. by Aveyron and Tarn, and S. by Aude and the Golfe du Lion. The southern prolongation of the Cévennes mountains occupies the north-western zone of the department, the highest point being about 4250 ft. above the sea-level. South-east of this range comes a region of hills and plateaus decreasing in height as they approach the sea, from which they are separated by the rich plains at the mouth of the Orb and the Hérault and, farther to the north-east, by the line of intercommunicating salt lagoons (Etang de Thau, &c.) which fringes the coast. The region to the north-west of Montpellier comprises an extensive tract of country known as the Garrigues, a district of dry limestone plateaus and hills, which stretches into the neighbouring department of Gard. The mountains of the north-west form the watershed between the Atlantic and Mediterranean basins. From them flow the Hérault, its tributary the Lergue, and more to the south-west the Livron and the Orb, which are the main rivers of the department. Dry summers, varied by occasional violent storms, are characteristic of Hérault. The climate is naturally colder and more rainy in the mountains.

A third of the surface of Hérault is planted with vines, which are the chief source of agricultural wealth, the department ranking first in France with respect to the area of its vineyards; the red wines of St Georges, Cazouls-lès-Béziers, Picpoul and Maranssan, and the white wines of Frontignan and Lunel (pop. in 1906, 6769) are held in high estimation. The arca given over to arable land and pasture is small in extent. Fruit trees of various kinds, but especially mulberries, olives and chestnuts flourish. The rearing of silk-worms is largely carried on. Considerable numbers of sheep are raised, their milk being utilized for the preparation of Roquefort cheeses. The mineral wealth of the department is considerable. There are mines of lignite, coal in the vicinity of Graissessac, iron, calamine and copper, and quarries of building-stone, limestone, gypsum, &c.; the marshes supply salt. Mineral springs are numerous, the most important being those of Lamalon-les-Bains and Balarucles-Bains. The chief manufactures are woollen and cotton cloth, especially for military use, silk (Ganges), casks, soap and fertilizing stuffs. There are also oil-works, distilleries (Béziers) and tanneries (Bédarieux). Fishing is an important industry. Cette and Mèze (pop. in 1906, 5574) are the chief ports. Hérault exports salt fish, wine, liqueurs, timber, salt, building-material, &c. It imports cattle, skins, wool, cereals, vegetables, coal and other commodities. The railway lines belong chiefly to the

Southern and Paris-Lyon-Méditerranée companies. The Canal du Midi traverses the south of the department for 44 m. and terminates at Cette. The Canal des Étangs traverses the department for about 20 m., forming part of a line of communication between Cette and Aigues-Mortes. Montpellier, the capital, is the seat of a bishopric of the province of Avignon, and of a court of appeal and centre of an academie (educational division). The department belongs to the 16th military region, which has its headquarters at Montpellier. It is divided into the arrondissements of Montpellier, Béziers, Lodève and St Pons, with 36 cantons and 340 communes.

Montpellier, Béziers, Lodève, Bédarieux, Cette, Agde, Pézenas, Lamalou-les-Bains and Clermont-l'Hérault are the more noteworthy towns and receive separate treatment. Among the other interesting places in the department are St Pons, with a church of the 12th century, once a cathedral, Villemagne, which has several old houses and two ruined churches, one of the 13th, the other of the 14th century; Pignan, a medieval town, near which is the interesting abbey-church of Vignogoul in the early Gothic style; and St Guilhem-le-Désert, which has a church of the 11th and 12th centuries. Maguelonne, which in the 6th century became the seat of a bishopric transferred to Montpellier in 1536, has a cathedral of the 12th century.

HÉRAULT DE SÉCHELLES, MARIE JEAN (1759-1794), French politician, was born at Paris on the 20th of September 1759, of a noble family connected with those of Contades and Polignac. He made his début as a lawyer at the Châtelet, and delivered some very successful speeches; later he was avocat général to the parlement of Paris. His legal occupations did not prevent him from devoting himself also to literature, and after 1789 he published an account of a visit he had made to the comte de Buffon at Montbard. Hérault's account is marked by a delicate irony, and it has with some justice been called a masterpiece of interviewing, before the day of journalists. Hérault, who was an ardent champion of the Revolution, took part in the taking of the Bastille, and on the 8th of December 1789 was appointed judge of the court of the first arrondissement in the department of Paris. From the end of January to April 1791 Hérault was absent on a mission in Alsace, where he had been sent to restore order. On his return he was appointed commissaire du roi in the court of cassation. He was elected as a deputy for Paris to the Legislative Assembly, where he gravitated more and more towards the extreme left; he was a member of several committees, and, when a member of the diplomatic committee, presented a famous report demanding that the nation should be declared to be in danger (11th June 1793). After the revolution of the 10th of August 1792 (see FRENCH REVOLUTION), he co-operated with Danton, one of the organizers of this rising, and on the 2nd of September was appointed president of the Legislative Assembly. deputy to the National Convention for the department of Seine-et-Oise, and was sent on a mission to organize the new department of Mont Blanc. He was thus absent during the trial of Louis XVI., but he made it known that he approved of the condemnation of the king, and would probably have voted for the death penalty. On his return to Paris, Hérault was several times president of the Convention, notably on the 2nd of June 1793, the occasion of the attack on the Girondins, and on the 10th of August 1793, on which the passing of the new constitution was celebrated. On this occasion Hérault, as president of the Convention, had to make several speeches. It was he, moreover, who, on the rejection of the projected constitution drawn up by Condorcet, was entrusted with the task of preparing a fresh one; this work he performed within a few days, and his plan, which, however, differed very little from that of Condorcet, became the Constitution of 1793, which was passed, but never applied. As a member of the Committee of Public Safety, it was with diplomacy that Hérault was chiefly concerned, and from October to December 1793 he was employed on a diplomatic and military mission in Alsace. But this mission helped to make him an object of suspicion to the other members of the Committee of Public Safety, and especially to Robespierre,

He was a

who as a deist and a fanatical follower of the ideas of Rousseau, hated Hérault, the follower of the naturalism of Diderot. He was accused of treason, and after being tried before the revolutionary tribunal, was condemned at the same time as Danton, and executed on the 16th Germinal in the year II. (5th April 1794). He was handsome, elegant and a lover of pleasure, and was one of the most individual figures of the Revolution.

See the Voyage à Montbard, published by A. Aulard (Paris, 1890); A. Aulard, Les Orateurs de la Législative et de la Convention, 2nd ed. (Paris, 1906); J. Claretie, Camille Desmoulins... étude sur les Dantonistes (Paris, 1875); Dr Robinet, Le Procès des Dantonistes (Paris, 1879); "Hérault de Séchelles, sa première mission en Alsace" in the review La Révolution Française, tome 22; E. Daudet, Le Roman d'un conventionnel. Hérault de Séchelles et les dames de Bellegarde (1904). His Euvres littéraires were edited (Paris, 1907) (R. A.') by E. Dard.

HERB (Lat. herba, grass, food for cattle, generally taken to represent the Old Lat. forbea, Gr. popßý, pasture, dépßew, to feed, Sans. bharb, to eat), in botany, the name given to those plants whose stem or stalk dies entirely or down to the root each year, and does not become, as in shrubs or trees, woody or permanent, such plants are also called "herbaceous." The term "herb " is also used of those herbaceous plants, which possess certain properties, and are used for medicinal purposes, for flavouring or garnishing in cooking, and also for perfumes (see HORTICULTURE and PHARMACOLOGY).

HERBARIUM, or HORTUS SICCUS, a collection of plants so dried and preserved as to illustrate as far as possible their characters. Since the same plant, owing to peculiarities of climate, soil and situation, degree of exposure to light and other influences may vary greatly according to the locality in which it occurs, it is only by gathering together for comparison and study a large series of examples of each species that the flora of different regions can be satisfactorily represented. Even in the best equipped botanical garden it is impossible to have, at one and the same time, more than a very small percentage of the representatives of the flora of any given region or of any large group of plants. Hence a good herbarium forms an indispensable part of a botanical museum or institution. There are large herbaria at the British Museum and at the Royal Gardens, Kew, and smaller collections at the botanical institutions at the principal British universities. The original herbarium of Linnaeus is in the possession of the Linnaean Society of London. It was purchased from the widow of Linnaeus by Dr (afterwards Sir) J. E. Smith, one of the founders of the Linnaean Society, and after his death was purchased by the society. Herbaria are also associated with the more important botanic gardens and museums in other countries. The value of a herbarium is much enhanced by the possession of "types," that is, the original specimens on the study of which a species was founded. Thus the herbarium at the British Museum, which is especially rich in the earlier collections made in the 18th and early 19th centuries, contains the types of many species founded by the earlier workers in botany. It is also rich in the types of Australian plants in the collections of Sir Joseph Banks and Robert Brown, and contains in addition many valuable modern collections. The Kew herbarium, founded by Sir William Hooker and greatly increased by his son Sir Joseph Hooker, is also very rich in types, especially those of plants described in the Flora of British India and various colonial floras. The collection of Dillenius is deposited at Oxford, and that of Professor W. H. Harvey at Trinity College, Dublin. The collections of Antoine Laurent de Jussieu, his son Adrien, and of Auguste de St Hilaire, are included in the large herbarium of the Jardin des Plantes at Paris, and in the same city is the extensive private collection of Dr Ernest Cosson. At Geneva are three large collections-Augustin Pyrame de Candolle's, containing the typical specimens of the Prodromus, a large series of monographs of the families of flowering plants, Benjamin Delessert's fine series at the Botanic Garden, and the Boissier Herbarium, which is rich in Mediterranean and Oriental plants. The university of Göttingen has had bequeathed to it the largest collection (exceeding 40,000 specimens) ever made by a single individual-that of Professor Grisebach. At the

of about 6 in., in an air-tight cupboard, on the inner side of the door of which, as a special protection against insects, is suspended a muslin bag containing a piece of camphor.

Specimens of flowering plants and vascular cryptograms are generally mounted on sheets of stout smooth paper, of uniform quality; the size adopted at Kew is 17 in. long by 11 in. broad, that at the British Museum is slightly larger; the palms and their allies, however, and some ferns, require a larger size. The tough but flexible coarse grey paper (German Fliess papier), upon which on the Continent specimens are commonly fixed by gummed strips of the same, is less hygroscopic than ordinary cartridge paper, but has the disadvantage of affording harbourage in the inequalities of its surface to a minute insect, Atropos pulsatoria, which commits great havoc in damp specimens, and which, even if noticed, cannot be dislodged without difficulty. The majority of plant specimens are most suitably fastened on paper by a mixture of equal parts of gum tragacanth and gum arabic made into a thick paste with water. Rigid leathery leaves are fixed by means of glue, or, if they present too smooth a surface, by stitching at their edges. Where, as in private herbaria, the specimens are not liable to be handled with great frequency, a stitch here and there round the stem, tied at the back of the sheet, or slips of paper passed over the stem through two slits in the sheet and attached with gum to its back, or simply strips of gummed paper laid across the stem, may be resorted to.

To preserve from insects, the plants, after mounting, are often brushed over with a liquid formed by the solution of Ib. each of corrosive sublimate and carbolic acid in 1 gallon of methylated spirits. They are then laid out to dry on shelves made of a network of stout galvanized iron wire. The use of corrosive sublimate is not, however, recommended, as it forms on drying a fine powder which when the plants are handled will rub off and, being carried into the air, may prove injurious to workers. If the plants are subjected to some process, before mounting, by which injurious organisms are destroyed, such as exposure in a closed chamber to vapour of carbon bisulphide for some hours, the presence of pieces of camphor or naphthalene in the cabinet will be found a sufficient preservative. After mounting are written-usually in the right-hand corner of the sheet, or on a label there affixed-the designation of each species, the date and place of gathering, and the name of the collector. Other particulars as to habit, local abundance, soil and claim to be indigenous may be written on the back of the sheet or on a slip of writing paper attached to its edge. It is convenient to place in a small envelope gummed to an upper corner of the sheet any flowers, seeds or leaves needed for dissection or microscopical examination, especially where from the fixation of the specimen it is impossible to examine the leaves for oilreceptacles and where seed is apt to escape from ripe capsules and be lost. The addition of a careful dissection of a flower greatly increases the value of the specimen. To ensure that all shall lie evenly in the herbarium the plants should be made to occupy as far as possible alternately the right and left sides of their respective sheets. The species of each genus are then arranged either systematically or alphabetically in separate covers of stout, usually light brown paper, or, if the genus be large, in several covers with the name of the genus clearly indicated in the lower left-hand corner of each, and opposite it the names or reference numbers of the species. Undetermined species are relegated to the end of the genus. Thus prepared,

The systematic arrangement varies in different herbaria. In the great British herbaria the orders and genera of flowering plants are usually arranged according to Bentham and Hooker's Genera plantarum; the species generally follow the arrangement of the most recent complete monograph of the family. In nonflowering plants the works usually followed are for ferns, Hooker and Baker's Synopsis filicum; for mosses, Müller's Synopsis muscorum frondosorum, Jaeger & Sauerbeck's Genera et species muscorum, and Engler & Prantl's Pflanzenfamilien; for algae, de Toni's Sylloge algarum; for hepaticae, Gottsche, Lindenberg and Nees ab Esenbeck's Synopsis hepaticarum, supplemented by Stephani's Species hepaticarum; for fungi, Saccardo's Sylloge fungorum, and for mycetozoa Lister's monograph of the group. For the members of large genera, e.g. Piper and Ficus, since the number of cosmopolitan or very widely distributed species is comparatively few, a geographical grouping is found specially convenient by those who are constantly receiving parcels of plants from known foreign sources. The ordinary systematic arrangement possesses the great advantage, in the case of large genera, of readily indicating the affinities of any particular specimen with the forms most nearly allied to it. Instead of keeping a catalogue of the species contained in the herbarium, which, owing to the constant additions, would be almost impossible, such species are usually ticked off with a pencil in the systematic work which is followed in arranging them, so that by reference to this work it is possible to see at a glance whether the specimen sought is in the herbarium and what species are still wanted.

Specimens intended for the herbarium should be collected when possible in dry weather, care being taken to select plants or portions of plants in sufficient number and of a size adequate to illustrate all the characteristic features of the species. When the root-leaves and roots present any peculiarities, they should invariably be collected, but the roots should be dried separately in an oven at a moderate heat. Roots and fruits too bulky to be placed on the sheet of the herbarium may be conveniently arranged in glass-covered boxes contained in drawers. The best and most effective mode of drying specimens is learned only by experience, different species The chief points to be attended to are to have a plentiful supply of requiring special treatment according to their several peculiarities. botanical drying paper, so as to be able to use about six sheets for each specimen; to change the paper at intervals of six to twelve hours; to avoid contact of one leaf or flower with another; and to specimen. To preserve the colour of flowers pledgets of cotton wool, increase the pressure applied only in proportion to the dryness of the which prevent bruising, should be introduced between them, as also, if the stamens are thick and succulent, as in Digitalis, between these and the corolla. A flower dissected and gummed on the sheets will inflorescence. A flat sheet of lead or some other suitable weight often retain the colour which it is impossible to preserve in a crowded should be laid upon the top of the pile of specimens, so as to keep up a continuous pressure. Succulent specimens, as many of the Orchi daceae and sedums and various other Crassulaceous plants, require drying paper, or, instead of becoming dry, they will grow between the to be killed by immersion in boiling water before being placed in sheets. When, as with some plants like Verbascum, the thick hard stems are liable to cause the leaves to wrinkle in drying by removing the pressure from them, small pieces of bibulous paper or cotton wool may be placed upon the leaves near their point of attachment to the stem. When a number of specimens have to be submitted to pressure, ventilation is secured by means of frames corresponding in size to the drying paper, and composed of strips of wood or wires laid across each other so as to form a kind of network. Another mode of drying is to keep the specimens in a box of dry sand in a warm place for ten or twelve hours, and then press them in drying paper. A third method consists in placing the specimen within bibulous paper, and enclosing the whole between two plates of coarsely perforated zinc supported in a wooden frame. The zinc plates are then drawn close together by means of straps, and suspended before a fire until the drying is effected. By the last two methods the colour of the flowers may be well preserved. When the leaves are finely divided, as in Conium, much trouble will be experienced in lifting a half-dried specimen from one paper to another; but the plant may be placed in a sheet of thin blotting paper, and the sheet containing the plant, instead of the plant itself, can then be moved. Thin straw-coloured paper, such as is used' for biscuit bags, may be conveniently employed by travellers unable to carry a quantity of