appropriations received by each State and Territory to June 30, 1904, under the act of Congress of August 30, 1890, for the more complete endowment and support of the colleges established under the act of July 2, 1862; and (3) the total amount, $31,157,588, of Federal aid received from the two sources mentioned.

A large map showed the location of each college of agriculture and mechanic arts, the amount of land received by each State for such institutions, and the total amount of land granted by the Federal Government for all other educational purposes.

A large chart, entitled "Progress of Public and Private Higher Education in the United States in Twenty Years," showed, in comparative form, the progress made from 1882 to 1902, first, by the public (including colleges of agriculture and mechanic arts) and, secondly, by the private institutions for higher education.

Smaller statistical charts showed (1) growth in number of students from 1891 to 1903; (2) increase in the value of the material equipment from 1870 to 1903; (3) value of all property, including endowment funds owned in 1903; (4) increase from 1865 to 1903 in the number of institutions, number of professors, and number of collegiate and graduate students; (5) comparison of income from 1885 to 1903 with that of all other institutions for higher education; (6) proportion of regular technical students pursuing certain degree courses; (7) growth of libraries compared with that of all other institutions for higher education; (8) attendance from 1890 to 1903 compared with that at all other institutions for higher education. There were also shown volumes of examination questions and answers by students of a number of the colleges of agriculture and mechanic arts in English, French, German, Latin, mathematics, physics, chemistry, history, and economics, and in miscellaneous branches. These volumes were intended to give some idea of the nature of the work that is being done by the several institutions in some of the nontechnical or general studies usually included in the courses of study offered by these institutions.

An electrical display machine, showing important facts relating to the history, work, and present status of the colleges of agriculture and mechanic arts, was a prominent and effective feature of this exhibit.

EXHIBIT OF THE OFFICE OF EXPERIMENT STATIONS.

(See Pl. XXXVIII, fig. 2.)

On the side of the pavilion occupied by the exhibit of the Office of Experiment Stations the central wall space was occupied by an electrical display machine showing prominent features in the origin, distribution, and work of agricultural experiment stations throughout

the world. The location of about 700 of these stations was shown on a map of the world, and charts were displayed showing the value of investigations made by the stations from an educational as well as economic point of view. In bookcases were shown bound sets of publications of the Office and of the experiment stations and about 200 text-books, manuals, and reference books written or edited by experiment station men. These books are based on the results of agricultural investigations in this country and abroad and are doing very valuable service in reducing these results to pedagogic form. They constitute largely the science of agriculture as it is now coming to be recognized in this country. Specimens of the large number of special publications-circulars, press bulletins, popular bulletins, spray calendars, etc.-issued by the experiment stations were shown in glass-covered cases.

In wing frames were shown a large number of photographs illustrating some of the buildings, live stock, and other equipment of the I experiment stations, as well as some of the more striking experiments conducted by them.

Associated with the exhibits of the Bureau of Education and the Office of Experiment Stations was a small exhibit of charts, drawings, photographs, etc., illustrating courses of study, apparatus, methods, and results of the work of some of the institutions in biological sciences (botany, zoology, and physiology).

AGRICULTURAL EXHIBITS.

I. AGRONOMY, OR PLANT PRODUCTION.

The exhibits illustrating work in this subject included (1) plant laboratory, (2) soils laboratory, (3) fertilizers, (4) field crops, (5) horticulture and forestry, (6) plant pathology, and (7) entomology, as well as the supplementary outside exhibits of grain judging and plant breeding (see p. 708.)

PLANT LABORATORY.

(Pl. XXXIX, fig. 1.)

The object of this exhibit was to show in operation a fairly well equipped laboratory for instruction and research in the study of botany in its various phases, but especially as related to agriculture. The exhibit illustrated some of the methods followed at the institutions contributing to the exhibit, and showed a number of appliances and pieces of apparatus which have been devised or modified by college or station men. It contained apparatus for preparing material and making microscopic studies of plant tissues; for studying transpiration and the humidity of the air, and the effect of gravity upon plant growth; for recording the rate of growth of plants; for studies