The American Journal of Science and Arts, Объемы 101-102S. Converse, 1871 |
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Стр. 3
... force by long use . Broad furrows , eight to ten inches in depth , made in trap or granite over long distances , uniform in direction , must have required prolonged abrasion for scores of years , and by an abrading agent not liable to ...
... force by long use . Broad furrows , eight to ten inches in depth , made in trap or granite over long distances , uniform in direction , must have required prolonged abrasion for scores of years , and by an abrading agent not liable to ...
Стр. 6
... forces , that we perceive the sun to exert upon a portion of the matter of comets . The luminosity of such radiations may be ascribed either to a reflection of the sun's light , or to electric discharges . Upon this question we shall ...
... forces , that we perceive the sun to exert upon a portion of the matter of comets . The luminosity of such radiations may be ascribed either to a reflection of the sun's light , or to electric discharges . Upon this question we shall ...
Стр. 7
... forces proceed from the sun in a form different from that of magnetic force , and are converted into this latter form of force probably by their action upon the matter of the earth or its atmosphere . " If this be admitted then we must ...
... forces proceed from the sun in a form different from that of magnetic force , and are converted into this latter form of force probably by their action upon the matter of the earth or its atmosphere . " If this be admitted then we must ...
Стр. 13
... forces , it may well happen that some individual jets will proceed in con- vex , and others in concave curves , according as the escaping matter is repelled or attracted by the sun . 2. Observations on the physical constitution of the ...
... forces , it may well happen that some individual jets will proceed in con- vex , and others in concave curves , according as the escaping matter is repelled or attracted by the sun . 2. Observations on the physical constitution of the ...
Стр. 18
... force , " after having shown the relation of the magneto - electric current to the electro - conducting power of the substance in which it is induced , he writes ( Exp . Res . 3172- 73 ) , “ All the results described are those obtained ...
... force , " after having shown the relation of the magneto - electric current to the electro - conducting power of the substance in which it is induced , he writes ( Exp . Res . 3172- 73 ) , “ All the results described are those obtained ...
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acid amygdules Analcite appears atmosphere atomic beds body branchial calcite carbonate chloride chromosphere coal color cone containing copper corona Cretaceous crinoid crystalline crystals Datolite delessite deposits described determined distance edge electric Eocene experiments fact feet formation Fort Bridger fossil genus Geological give glacier granitic Grizzly Buttes grms heat hydrogen inch iron Journal Lake latter laumontite length less light limestone liquid lower magnetic mass mercury miles mineral molecules mudlump naphtha nearly nitric acid observed obtained Orthoclase oxide Oxytricha papillæ passing petroleum phosphate photosphere plates portion posterior Prehnite present probably Prof quantity quartz region remarkable river rocks salt seen side silicate solar solution species specimens spectroscope spectrum strata substance sulphuric sun's surface temperature Tertiary thickness tion tornado Transverse diameter tube upper valley vapor veins vertebræ weight Yale College
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Стр. 268 - There is grandeur in this view of life, with its several powers, having been originally breathed by the Creator into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being evolved.
Стр. 268 - But overpoweringly strong proofs of intelligent and benevolent design lie all round us; and if ever perplexities, whether metaphysical or scientific, turn us away from them for a time, they come back upon us with irresistible force, showing to us through nature the influence of a free-will, and teaching us that all living beings depend on one everacting Creator and Ruler.
Стр. 267 - Hence, and because we all confidently believe that there are at present, and have been from time immemorial, many worlds of life besides our own, we must regard it as probable in the highest degree that there are countless seedbearing meteoric stones moving about through space. If, at the present instant, no life existed upon this earth, one such stone falling upon it might, by what we blindly call natural causes, lead to its becoming covered with vegetation.
Стр. 268 - It is interesting to contemplate an entangled bank, clothed with many plants of many kinds, with birds singing on the bushes, with various insects flitting about, and with worms crawling through the damp earth, and to reflect that these elaborately constructed forms, so different from each other, and dependent on each other in so complex a manner, have all been produced by laws acting around us.
Стр. 300 - Medical Times. A SERIES OF CHEMICAL PROBLEMS, prepared with Special Reference to the above, by TE THORPE, Ph.D., Professor of Chemistry in the Yorkshire College of Science, Leeds. Adapted for the preparation of Students for the Government, Science, and Society of Arts Examinations. With a Preface by Professor ROSCOE. New Edition, with Key, iSmo. 2s. POLITICAL ECONOMY. POLITICAL ECONOMY FOR BEGINNERS. By MILLICENT G. FAWCETT. New Edition. iSmo. zr. fid. "Clear, compact, and comprehensive."— Daily...
Стр. 252 - Definite and complete in its area as it is, it is but a well-drawn part of a great chart, in which all physical science will be represented with every property of matter shown in dynamical relation to the whole. The prospect we now have of an early completion of this chart is based on the assumption of atoms. But there can be no permanent satisfaction to the mind in explaining heat, light, elasticity, diffusion, electricity and magnetism, in...
Стр. 265 - The essence of science, as is well illustrated by astronomy and cosmical physics, consists in inferring antecedent conditions, and anticipating future evolutions, from phenomena which have actually come under observation.
Стр. 266 - Science is bound, by the everlasting law of honor, to face fearlessly every problem which can fairly be presented to it...
Стр. 250 - He went home with the result, and commenced his calculations, but felt so much agitated that he handed over the arithmetical work to a friend: then (and not when, sitting in a garden, he saw an apple fall) did he ascertain that gravitation keeps the Moon in her orbit. Faraday's discovery of specific inductive capacity, which inaugurated the new philosophy, tending to discard action at a distance, was the result of minute and accurate measurement of electric forces. Joule's discovery of thermo-dynamic...
Стр. 250 - Andrews' discovery of the continuity between the gaseous and liquid states was worked out by many years of laborious and minute measurement of phenomena scarcely sensible to the naked eye.