The American Journal of Science and ArtsS. Converse, 1878 |
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Side iv
... Natural History : Glaciers of the Western Himalayas , 163. - Total Solar Eclipse of July 29 , 164 . Obituary . - Wm . M. Gabb : Baron von Bibra : A. von Ettingshausen , 164 . NUMBER XCIII . Page ART . XV . - On the Origin of Comets ; by ...
... Natural History : Glaciers of the Western Himalayas , 163. - Total Solar Eclipse of July 29 , 164 . Obituary . - Wm . M. Gabb : Baron von Bibra : A. von Ettingshausen , 164 . NUMBER XCIII . Page ART . XV . - On the Origin of Comets ; by ...
Side viii
... Natural History , Report of the Botanist : Ferns of North America , 487. - Sarracenia purpurea : Professor Alexander Agassiz's Zoological Laboratory at Newport , R. I. 488 . Miscellaneous Scientific Intelligence . - Report on the Arid ...
... Natural History , Report of the Botanist : Ferns of North America , 487. - Sarracenia purpurea : Professor Alexander Agassiz's Zoological Laboratory at Newport , R. I. 488 . Miscellaneous Scientific Intelligence . - Report on the Arid ...
Side 29
... natural crystals of gold . They do not seem to be distorted or flattened at all . Neither do the dendritic forms so common in nature and now quite easily obtained artificially , appear on the surface of the bars . The precipitation of ...
... natural crystals of gold . They do not seem to be distorted or flattened at all . Neither do the dendritic forms so common in nature and now quite easily obtained artificially , appear on the surface of the bars . The precipitation of ...
Side 30
... natural crystals occasionally found , and the arborescent forms of other isometric minerals . But all such crystals that I have seen have invariably the angle of 60 ° between the side ribs and the midrib , making an angle of 120 ...
... natural crystals occasionally found , and the arborescent forms of other isometric minerals . But all such crystals that I have seen have invariably the angle of 60 ° between the side ribs and the midrib , making an angle of 120 ...
Side 31
... natural ones . The latter are seen under a low power to be made up of strings of distorted isometric crystals which are often so dis- tinct that they can be measured . The artificial ones do not show this structure , and when magnified ...
... natural ones . The latter are seen under a low power to be made up of strings of distorted isometric crystals which are often so dis- tinct that they can be measured . The artificial ones do not show this structure , and when magnified ...
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acid aconitine alcohol angles Ångström anorthite antimony appear augite barometer beds Breckenridge carbon cent chemical childrenite chromosphere color comets composition contains corona crystals deposits described determined Devonian diabase diameter eosphorite fact fathoms feet feldspar forest formation Fort Sully fossils genera genus geological gives glacial glaciers gneiss grams heat hornblende hydrogen inches iron Lake latitude less limestone lines lithiophilite magnet mass Mercury metal mica miles mineral Mississippi Morosaurus mounds mountain nearly observed obtained occur orbits origin orthoclase oxide oxygen paper planet plates portion Portland potassium precipitate present pressure probably produced Professor pyroxene quantity quartz region Report resonator River rocks salt saussurite schist SCI.-THIRD SERIES shales side Silurian solar spectrum solution species specific gravity specimens substance surface temperature thickness tion trees triclinic triploidite tube upper valley vapor velocity vibrations volume weight
Populære avsnitt
Side 392 - SOUND : a Series of Simple, Entertaining, and Inexpensive Experiments in the Phenomena of Sound, for the use of Students of every age.
Side 84 - CLIFFORD — THE ELEMENTS OF DYNAMIC. An Introduction to the Study of Motion and Rest in Solid and Fluid Bodies.
Side 334 - Additions, the Substance of a Course of Lectures delivered at the Royal Institution of Great Britain in 1874.
Side 445 - ... to have a term which shall refer solely to the composition and thermodynamic state of any such body without regard to its quantity or form. We may call such bodies as differ in composition or state different phases of the matter considered, regarding all bodies which differ only in quantity and form as different examples of the same phase. Phases which can exist together, the dividing surfaces being plane, in an equilibrium which does not depend upon passive resistances to change, we shall call...
Side 389 - ... trade winds stronger than the north-east, and compel them to blow over upon the northern hemisphere, as far probably as the Tropic of Cancer. The result is that all the great equatorial currents of the ocean are impelled into the northern hemisphere, which thus, in consequence of the immense accumulation of warm water, has its temperature raised, and snow and ice to a great extent must then disappear from the Arctic regions. When the precession of the equinoxes brings round the winter solstice...
Side 184 - ... Atlantic in species. It has not half as many Maples, nor Ashes, nor Poplars, nor Walnuts, nor Birches, and those it has are of smaller size and inferior quality ; it has not half as many Oaks ; and these and the Ashes are of so inferior economical value, that (as we are told) a passable wagon-wheel cannot be made of California wood, nor a really good one in Oregon.
Side 389 - When the eccentricity of the earth's orbit is at a high value, and the northern winter solstice is in perihelion, agencies are brought into operation which make the south-east trade winds stronger than the north-east, and compel them to blow over upon the northern hemisphere, as far probably as the Tropic of Cancer. The result is that all the great equatorial currents of the ocean are impelled into the northern hemisphere, which thus, in consequence of the immense accumulation of warm water, has...
Side 89 - From the Gulf of Mexico to the Gulf of St. Lawrence, the amount of rain decreases moderately and rather regularly from south to north ; but, as less is needed in a cold climate, there is enough to nourish forest throughout.
Side 290 - It is easy to speculate on the causes of such behavior, and it may be suggested that the reason of the non-appearance of a dark line may be, that the intensity of the light from a great thickness of ignited oxygen overpowers the effect of the photosphere...
Side 448 - The stability of any phase with respect to continuous changes depends upon the same conditions with respect to the second and higher differential coefficients of the density of energy regarded as a function of the density of entropy and the densities of the several components, which would make the density of energy a minimum, if the necessary conditions with respect to the first differential coefficients were fulfilled.