Chemical News and Journal of Industrial Science, Volum 78Chemical news office, 1898 |
Des de l'interior del llibre
Resultats 1 - 5 de 87.
Pàgina 3
... estimation of the nitrogen . But this estimation does not allow of the detec- tion of adulteration . As a matter of fact , a nitrogenous substance can easily be added to a mineral superphos- phate or to a superphosphate of bone - ash to ...
... estimation of the nitrogen . But this estimation does not allow of the detec- tion of adulteration . As a matter of fact , a nitrogenous substance can easily be added to a mineral superphos- phate or to a superphosphate of bone - ash to ...
Pàgina 4
... estimation of green bones from which the fat has been removed , treated with sulphuric acid , gave the proportion of 9'68 of fatty matter per cent of the total P205 . We thus see that the proportion 10 to 12 of fat per 100 of phosphoric ...
... estimation of green bones from which the fat has been removed , treated with sulphuric acid , gave the proportion of 9'68 of fatty matter per cent of the total P205 . We thus see that the proportion 10 to 12 of fat per 100 of phosphoric ...
Pàgina 5
... Estimation of the Carbon . For this purpose we use Särnström's apparatus as used for the estimation of the carbon in cast - iron . The oxida tion is carried out by the chromic solution , and the absorption of the carbonic acid by means ...
... Estimation of the Carbon . For this purpose we use Särnström's apparatus as used for the estimation of the carbon in cast - iron . The oxida tion is carried out by the chromic solution , and the absorption of the carbonic acid by means ...
Pàgina 6
... Estimation of the Total Iron . O'25 grm . of the sample is attacked with hydrochloric acid , filtered , and transformed into sulphate by evapora- tion with sulphuric acid . This is taken up with water , reduced by the action of zinc ...
... Estimation of the Total Iron . O'25 grm . of the sample is attacked with hydrochloric acid , filtered , and transformed into sulphate by evapora- tion with sulphuric acid . This is taken up with water , reduced by the action of zinc ...
Pàgina 15
... estimation of the nickel it readily indicates the neutrality of the solution . Even highly coloured filtrates have not been found to be harmful . In preparing for the cyanometric estimation of the separated nickel , it is necessary , in ...
... estimation of the nickel it readily indicates the neutrality of the solution . Even highly coloured filtrates have not been found to be harmful . In preparing for the cyanometric estimation of the separated nickel , it is necessary , in ...
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Passatges populars
Pàgina 122 - FELKIN, HM— Technical Education in a Saxon Town. Published for the City and Guilds of London Institute for the Advancement of Technical Education.
Pàgina 24 - Second, Revised, and Enlarged Edition. With a Preface by JOHANNES WISLICENUS, Professor of Chemistry at the University of Leipzig; and an Appendix 'Stereo-chemistry among Inorganic Substances,' by ALFRED WERNER, Professor of Chemistry at the University of Zurich.
Pàgina 142 - Annalen on The Constitution and Metamorphoses of Chemical Compounds, and on the Chemical Nature of Carbon...
Pàgina 129 - England than a scarcity of fertilisers — it means a scarcity of food. It is impossible that such a sinful violation of the divine laws of Nature should for ever remain unpunished ; and the time will probably come for England sooner than for any other country, when, with all her wealth in gold, iron, and coal, she will be unable to buy one-thousandth part of the food which she has, during hundreds of years, thrown recklessly away.
Pàgina 135 - No incident in my scientific career is more widely known than the part I took many years ago in certain psychic researches. Thirty years have passed since I published an account o( experiments tending to show that outside our scientific knowledge there exists a Force exercised by intelligence differing from the ordinary intelligence common to mortals.
Pàgina 136 - I cross the boundary of the experimental evidence, and discern in that Matter — which we, in our ignorance of its latent powers, and notwithstanding our professed reverence for its Creator, have hitherto covered with opprobrium, — the promise and potency of all terrestrial life.
Pàgina 99 - Bibliography of the Metals of the Platinum Group, Platinum, Palladium, Iridium, Rhodium, Osmium, Ruthenium, 1748-1896.
Pàgina 271 - The Chairman proposed, in a few neat sentences, the toasts of the Queen and the Prince and Princess of Wales, and the other members of the Royal Family, which were pledged with enthusiasm. In proposing the Army, Navy, and Reserve Forces, Sir Henry said he was very glad to associate with it a soldier who was able, from the position which he held, to reply for all branches of the service, commanding as he did...
Pàgina 214 - ... of a coal of unknown origin, and 0.45 per cent of a coal from Peru. Still later examinations in this laboratory of about 100 rocks, chiefly igneous, covering nearly the whole continental territory of the United States, show, not only its general qualitative and quantitative distribution, but that it predominates in the less siliceous igneous rocks and is absent, or nearly so, in those high in silica.
Pàgina 127 - The virgin land has been rapidly absorbed, until at present there is no land left for wheat without reducing the area for maize, hay, and other necessary crops.