The American Journal of Science

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J.D. & E.S. Dana, 1880 - Science
 

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Contents

Geology and Mineralogy Sketches of the Physical Geography and Geology
417
Physical Structure and Hypsometry of
429
Recent Explorations in the Wappinger Valley Lime
451
Companion of Sirius by Asaph Hall 45 V
457
Oxidation of Hydrochloric Acid Solutions of Anti
464
Occurrence of true Lingula in the Trenton Lime
472
Substances possessing the power of Developing
480
Chemistry and Physics Volumetric determination of Active Oxygen in
487
Astronomy Elements of the Comet discovered by J M Sohberle
494
Contributions to Meteorology by Elias Loomis
Observations on Mount Etna by S P Langley 33
33
Antiquity of Certain Subordinate Types of Freshwater
44
Boltzmans Method for Determining the Velocity of
52
SCIENTIFIC INTELLIGENCE
58
Botany and Zoology Action of Light on Vegetation 74 Criticism of the accounts
76
New Action of Magnetism on a Permanent
161
Colors of Thin Blowpipe Deposits by C H Koyl 187
187
Geological Relations of the Limestone Belts of West
194
Permian and other Paleozoic Groups of the Kanab
221
Notice of Jurassic Mammals representing
235
Geology and Natural History Geological relations and fossil remains of
241
Obituary Louis Francois de Pourtales 253 Professor B B Andrews 255
255
Floating Magnets by R B Warder and W
285
Paleontologieal and Embryological Development
295
New Planetary Nebulae by E C Pickering 303
303
Physics Photographs of Star Spectra W Huggins 317 Direct measure of
319
Geology The present state of the Evidence bearing upon the Question of
328
The Study of Earthquakes
340
Miscellaneous Scientific Intelligence Movement of Glaciers Koch and Klocke
425

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Page 71 - NICHOLSON. A Manual of Zoology, for the use of Students. With a General Introduction on the Principles of Zoology. By HENRY ALLEYNE NICHOLSON, MD, D.Sc., FLS, FGS, Regius Professor of Natural History in the University of Aberdeen.
Page 314 - To ensure that temperature was in no way affecting the experiments, one of the bars was placed in a trough of water so that there was about an inch of water for the light to pass through, but the results were the same ; and when a strong light from the ignition of a narrow band of magnesium was held about nine inches above the water the resistance immediately fell more than two-thirds, returning to its normal condition immediately the light was extinguished.
Page 159 - A theory, reposing on vene cautce, which brings into quantitative correlation the lengths of the present day and month, the obliquity of the ecliptic, and the inclination and eccentricity of the lunar orbit, must, I think, have strong claims to acceptance.
Page 76 - This officer shall have the direction of the Geological Survey, and the classification of the public lands and examination of the geological structure, mineral resource, and products of the national domain.
Page 305 - In the flame the two least refrangible of the components of 6 are seen associated with a line less refrangible so as to form a triplet. A series of flutings and a line in the blue are also seen. . . . On passing the spark all these but the two components of 6 are abolished.
Page 458 - The masses are rough and knotted, like mulberry calculi, with rounded protuberances projecting from the surface on every side. The black coating is not uniform, being most marked between the projections. These projections have sometimes a bright metallic surface, showing them to consist of nodules of iron; and they also contain lumps of an olive-green mineral, having a distinct and easy cleavage. The greater part of the stony material is of a grey colour with the green mineral irregularly disseminated...
Page 457 - Ion, 94 50', withia that region of the United States which has become remarkable for falls of meteorites, and of which I gave an outline map in my article on " the three meteorites that fell at Rochester in Indiana, Cynthiana in Kentucky, and Warrington in Missouri, within the space of one month."* The State of Iowa has become particularly conspicuous in recent years as the landing place of these celestial messengers ; and I now have under examination still another remarkable one with some peculiar...
Page 337 - Provided the lamp can be made either cheap enough or durable enough, there is no reasonable doubt of the practical success of the light, but this point will evidently require much further experiment before the light can be pronounced practicable.
Page 146 - A MANUAL OF THE GEOLOGY OF INDIA, chiefly compiled from the observations of the Geological Survey. By HB Medlicott, MA, Superintendent, Geological Survey of India, and WT Blanford, ARSM, FRS, Deputy Superintendent.
Page 361 - ... and their resulting worlds may be evolved by a process of chemical condensation from this universal atmosphere, to which they would sustain a relation somewhat analogous to that of clouds and rain to the aqueous vapor around us. This, though it may be regarded as a legitimate and plausible speculation...

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