The American Journal of Science and Arts, Томи 101 – 102S. Converse, 1871 |
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Сторінка 15
... diameter , this would require the lunar atmosphere to be of vast extent ; whereas no decisive evidence has yet been obtained of the existence of any lunar atmos- phere capable of producing a sensible refraction , or reflecting a ...
... diameter , this would require the lunar atmosphere to be of vast extent ; whereas no decisive evidence has yet been obtained of the existence of any lunar atmos- phere capable of producing a sensible refraction , or reflecting a ...
Сторінка 54
... diameter of the anal tube ; * they are both rather long and diverge by curving outward from the base . The anal tube is smaller and somewhat longer than the branch- ial , usually about equal in length to half the diameter of the body ...
... diameter of the anal tube ; * they are both rather long and diverge by curving outward from the base . The anal tube is smaller and somewhat longer than the branch- ial , usually about equal in length to half the diameter of the body ...
Сторінка 56
... diameter ; with the anal tube nearly 2 inches long ; the branchial about 50. In the collection there are specimens of all sizes from this down to less than 25 of an inch in diameter . The young have essentially the same characters as ...
... diameter ; with the anal tube nearly 2 inches long ; the branchial about 50. In the collection there are specimens of all sizes from this down to less than 25 of an inch in diameter . The young have essentially the same characters as ...
Сторінка 57
... diameter , and is short , cylin- drical , with six short conical papillæ around the orifice . In contraction the tubes form low verrucæ . ४७ When living the color of the body is translucent , dull green- ish or olive , between the ...
... diameter , and is short , cylin- drical , with six short conical papillæ around the orifice . In contraction the tubes form low verrucæ . ४७ When living the color of the body is translucent , dull green- ish or olive , between the ...
Сторінка 58
... diameter . Eastport , at low - water mark under stones , and off the north- ern side of Treat's Island , in 10 to 20 fathoms , shelly bottom , - Expedition of 1870 . Molgula pilularis Verrill , sp . nov . Figure 4 , c . Body unattached ...
... diameter . Eastport , at low - water mark under stones , and off the north- ern side of Treat's Island , in 10 to 20 fathoms , shelly bottom , - Expedition of 1870 . Molgula pilularis Verrill , sp . nov . Figure 4 , c . Body unattached ...
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acid amygdaloid amygdules Analcite appears atomic beds body calcite carbonate Carboniferous character chloride chromosphere coal color comet containing copper corona Cretaceous crystalline crystals Datolite delessite deposits described determined diameter direction distance edge epidote experiments fact fathoms feet feldspar formation fossils genus Geological glacier granitic Grizzly Buttes grms heat hydrogen images inch iridium iron Lake latter laumontite length less light limestone lower magnetic mass melaphyr metallic meteoric miles mineral minute mountain mudlump nearly nitric acid observations obtained occur Orthoclase oxide Oxytricha papillæ passed photosphere plates portion position posterior prehnite premolar present probably Prof quartz region remarkable river rocks salt seen side silicate solar solution species specimens spectrum stars strata sulphur surface temperature Tertiary thick tion tornado transverse tube upper valley vapor veins weight Yale College
Популярні уривки
Сторінка 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.
Сторінка 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.
Сторінка 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.
Сторінка 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.
Сторінка 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...
Сторінка 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...
Сторінка 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.
Сторінка 266 - Science is bound, by the everlasting law of honor, to face fearlessly every problem which can fairly be presented to it...
Сторінка 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...
Сторінка 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.