The American Journal of Science and ArtsS. Converse, 1870 |
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Results 1-5 of 25
Page 114
... needles , until the entire liquid has be- come a matted mass of them . The same change takes place when the liquid is kept for some time at a temperature below 25 ° C .; above 27 ° C. , however , it does not take place . The solid ...
... needles , until the entire liquid has be- come a matted mass of them . The same change takes place when the liquid is kept for some time at a temperature below 25 ° C .; above 27 ° C. , however , it does not take place . The solid ...
Page 116
... needles . It is almost insoluble in cold water , and but little soluble in hot ; alcohol and ether dissolve it readily . At 84 ° it melts and at a higher tempera- ture distils . Its vapors are aromatic and irritating . To produce it ...
... needles . It is almost insoluble in cold water , and but little soluble in hot ; alcohol and ether dissolve it readily . At 84 ° it melts and at a higher tempera- ture distils . Its vapors are aromatic and irritating . To produce it ...
Page 167
... needle is great- est on those years in which the sun's surface is most disturbed , we could not be surprised if the range of the magnetic needle should prove to be the greatest on those days on which the so- lar spots are most extensive ...
... needle is great- est on those years in which the sun's surface is most disturbed , we could not be surprised if the range of the magnetic needle should prove to be the greatest on those days on which the so- lar spots are most extensive ...
Page 195
... needle ; keeping the cur- rent , as far as possible , of the same intensity during the two comparisons . This method I found could not serve the purpose of measuring forces differing but slightly in intensity ; and the impossibility of ...
... needle ; keeping the cur- rent , as far as possible , of the same intensity during the two comparisons . This method I found could not serve the purpose of measuring forces differing but slightly in intensity ; and the impossibility of ...
Page 196
... needle caused me to devise the following method , which I have found from expe- rience to be both sensitive and ... needle 5 · 85 in . long was so arranged that the point of suspension of the needle could be moved between the helices in ...
... needle caused me to devise the following method , which I have found from expe- rience to be both sensitive and ... needle 5 · 85 in . long was so arranged that the point of suspension of the needle could be moved between the helices in ...
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Common terms and phrases
Abiogenesis action alcohol ambulacral ammonia amount Antedon antozone apparatus appears Arisaig arsenic acid arsenite arsenite of ethyl atomic volumes auroras body boiling Brachiopods carbon cent chlorid Cimoliasaurus color columbite compounds containing copper core corresponding Cretaceous Crinoids crystals deflection determined diameter distilled Elasmosaurus elasticity electrized oxygen Eozoon equal equator ether experiments feet flame formula fossils galvanometer genus geological give glass gneisses heat helix hydrogen hypermanganate inch iodid iron Laurentian Leidy length less limestone lines liquid magnetic manganese mass matter mean metal method molecules needle observations obtained oxyd oxygen ozone paper period photosphere plants plates portion potassium potassium iodid precipitated present prism produced Prof quantity radiation region rocks selenium sodium solar spots solution species specimens spectrum spirals sulphur sulphuric acid sun's surface temperature theory thickness tion tube vibration wire zinc
Popular passages
Page 386 - Out of the eater came forth meat, and out of the strong came forth sweetness.
Page 389 - But the great tragedy of Science — the slaying of a beautiful hypothesis by an ugly fact...
Page 402 - I commenced this Address by asking you to follow me in an attempt to trace the path which has been followed by a scientific idea, in its long and slow progress from the position of a probable hypothesis to that of an established Law of Nature. Our survey has not taken us into very attractive regions ; it has lain chiefly in a land flowing with the abominable, and peopled with mere grubs and mouldiness.
Page 385 - ... something which is kept away by gauze. But gauze will not keep away aeriform bodies, or fluids. This something must, therefore, exist in the form of solid particles too big to get through the gauze. Nor is one long left in doubt what these solid particles are; for the blowflies, attracted by the...
Page 402 - ... And thus mankind will have one more admonition that " the people perish for lack of knowledge " ; and that the alleviation of the miseries, and the promotion of the welfare, of men must be sought, by those who will not lose their pains, in that diligent, patient, loving study of all the multitudinous aspects of Nature, the results of which constitute exact knowledge, or Science.
Page 397 - ... of an inch in diameter, which are made visible in the lymph by the microscope. Similar experiments have proved that two of the most destructive of epizootic diseases, sheep-pox and glanders, are also dependent for their existence and their propagation upon extremely small living solid particles, to which the title of mierozymes is applied.
Page 401 - It seems to me impossible to rise from the perusal of those publications without a strong conviction that the lamentable mortality which so frequently dogs the footsteps of the most skilful operator, and those deadly consequences of wounds and injuries which seem to haunt the very walls of great hospitals, and...
Page 395 - I should expect to be a witness of the evolution of living protoplasm from not living matter. I should expect to see it appear under forms of great simplicity...
Page 143 - And assuredly, there is no mark of degradation about any part of its structure. It is, in fact, a fair average human skull, which might have belonged to a philosopher, or might have contained the thoughtless brains of a savage.
Page 384 - The philosophers of antiquity, interrogated as to the cause of these phenomena, were provided with a ready and a plausible answer. It did not enter their minds even to doubt that these low forms of life were generated in the matters in which they made their appearance. Lucretius, who had drunk deeper of...