The American Journal of Science and ArtsS. Converse, 1878 |
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Side 29
... solution by the aid of a battery is a well known process in the common operation of electro - gilding , but to deposit it in the A. H. Chester - Artificial Crystals of Gold . 29 III-Artificial Crystals of Gold and Gold Amalgam; A H CHESTER,
... solution by the aid of a battery is a well known process in the common operation of electro - gilding , but to deposit it in the A. H. Chester - Artificial Crystals of Gold . 29 III-Artificial Crystals of Gold and Gold Amalgam; A H CHESTER,
Side 30
... solution of chloride of gold and ammonium is placed in a shallow dish coated with heavy gold foil , which is connected with the zinc plate of a large Daniells ' battery . Near the top of the solution and connected with the copper plate ...
... solution of chloride of gold and ammonium is placed in a shallow dish coated with heavy gold foil , which is connected with the zinc plate of a large Daniells ' battery . Near the top of the solution and connected with the copper plate ...
Side 32
... solution by ferrous sulphate , washed with dilute chlorohydric acid and then with water and dried . This should be treated with about twelve parts of mer- cury and well triturated in a mortar . The amalgam must then be heated to about ...
... solution by ferrous sulphate , washed with dilute chlorohydric acid and then with water and dried . This should be treated with about twelve parts of mer- cury and well triturated in a mortar . The amalgam must then be heated to about ...
Side 39
... solution filtered off and added to the solution from the fusion , the oxide of iron was then dissolved in hydrochloric acid , the iron precipitated with ammonia and weighed as iron sesquioxide . The iron was then dissolved in ...
... solution filtered off and added to the solution from the fusion , the oxide of iron was then dissolved in hydrochloric acid , the iron precipitated with ammonia and weighed as iron sesquioxide . The iron was then dissolved in ...
Side 40
... solution , the excess of barium sepa- rated and the sodium weighed as sodium chloride . Care was taken to carry on the evaporations in platinum and avoid contact with glass as much as possible . Water was deter- mined by igniting in a ...
... solution , the excess of barium sepa- rated and the sodium weighed as sodium chloride . Care was taken to carry on the evaporations in platinum and avoid contact with glass as much as possible . Water was deter- mined by igniting in a ...
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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.