The American Journal of Science and Arts

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S. Converse, 1874
 

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Continguts

Preparation of Photographic DryPlates by Daylight
16
Mineralogical Notes Tellurium Ores of Colorado
25
Notes on Diffraction Gratings by John M BLAKE
33
On the Spectrum of the Zodiacal Light by ARTHUR
39
On the Age of the Copperbearing Rocks of Lake Supe
46
On the Parallelism of CoalSeams by E B ANDREWS 56
56
Geology and Natural History Decomposition of Crystalline Rocks by T STERRY
61
Astronomy Rapporti sulle Osservazioni dellEclisse totale di Sole del 22 Dicem
71
Astronomy On the Motions of some of the Nebulæ toward or from the Earth
75
Miscellaneous Scientific Intelligence The American Museum of Natural History
80
On the socalled Land Plants from the Lower Silurian
110
Descriptions of two new Species of Fishes from
123
The Phonautograph by Chas A MOREY 130
130
Spectrum of Coggias
157
Researches in Acoustics by ALFRED M MAYER 241
241
On the Thermo electrical Properties of some Minerals
255
On the Possible Periodic Changes of the Suns
268
A New Calculating Machine by GEORGE B GRANT
277
by WOLCOTT GIBks
284
XXVİ The Mathematical and Philosophical State of
297
Chemistry and Physics Fluoxyboric Acid BASAROW 309 Ozone not produced
311
Alex
323
The Deportment of Titanium with reagents in Iron
334
On the Molecular Heat of Similar Compounds
340
Researches in Acoustics by ALFRED M MAYER
362
On Serpentine Pseudomorphs and other kinds
371
Chemistry and Physics On the Variations of Chemical Activity in the Solar
417
Geology and Natural History Eozoon Canadense not a Foraminifer or Calcareous
438
New Comet
446

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Passatges populars

Pāgina 297 - That gravity should be innate, inherent and essential to matter so that one body may act upon another at a distance through a vacuum, without the mediation of anything else, by and through which their action and force may be conveyed from one to another is to me so great an absurdity...
Pāgina 77 - Edition. IV. MIND AND BODY: THE THEORIES OF THEIR RELATIONS. By Alexander Bain, LL.D., Professor of Logic at the University of Aberdeen. Four Illustrations. Price 4^. Third Edition. V. THE STUDY OF SOCIOLOGY.
Pāgina 301 - ... of the principle of the conservation of force. Must we then content ourselves with the naked facts of gravitation, as Comte did, or is it possible to resolve them into a mode of action in harmony with our general experience, and which does not shock our conceptions of matter and force? In 1798, Count Rumford wrote thus: "Nobody surely, in his sober senses, has ever pretended to understand the mechanism of gravitation.
Pāgina 297 - The same comparison might be made now, not so much between nationalities as between successive stages of scientific development. At the beginning of this century the universe was as empty as an exhausted receiver: now it has filled up again. Nature's abhorrence of a vacuum has been resuscitated, though for other reasons than those which satisfied the Aristotelians. It is the mathematicians and not the metaphysicians who are now discussing the relative merits of the plenum and the vacuum. Newton in...
Pāgina 437 - THE PERIODICITY OF THE SOLAR SPOTS. By JOHN BROCKLESBY, of Hartford, Ct. THE researches of scientists, especially of late, lead to the conclusion that there is an intimate connection, more or less marked, between the solar disturbances and various terrestrial phenomena. Thus, upon comparing the mean daily range of the magnetic declination, and also the number of auroras observed each year, with the extent of the spots on the solar disk, a striking correspondence is observed in the curves which respectively...
Pāgina 164 - ... the atmosphere; and other matters analogous to these. The Association will endeavor also to secure uniformity of usage in regard to standard points of reference, or to those physical conditions to which observations must be reduced for purposes of comparison; especially the temperature and pressure to which are referred the specific gravities of bodies, and the zero of longitude on the earth.
Pāgina 304 - ... the first, the material fabric which we have constructed still demands outward support. Thomson calculates that, within the historical period, the sun has emitted hundreds of times as much mechanical energy as is contained in the united motions of all the planets. This energy, he says, is dissipated more and more widely through endless space, and never has been, probably never can be, restored to the sun, without acts as much beyond the scope of human intelligence as a creation or annihilation...
Pāgina 162 - CONTRIBUTIONS TO SOLAR PHYSICS. By J. NORMAN LOCKYER, FRSI A Popular Account of Inquiries into the Physical Constitution of the Sun, with especial reference to Recent Spectroscopic Researches. II. Communications to the Royal Society of London and the French Academy of Sciences, with Notes. Illustrated by 7 Coloured Lithographic Plates and 175 Woodcuts. Royal 8vo. cloth, extra gilt, price 3u.
Pāgina 76 - Outlines of Proximate Organic Analysis, for the Identification, Separation, and Quantitative Determination of the more commonly occurring Organic Compounds.
Pāgina 80 - It cannot be too soon understood that science is one, and that whether we investigate language, philosophy, theology, history, or physics, we are dealing with the same problem, culminating in the knowledge of ourselves. Speech is known only in connection with the organs of man, thought in connection with his brain, religion as the expression of his aspirations, history as the record of his deeds, and physical sciences as the laws under which he lives.

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