Philosophical Transactions of the Royal Society of London, Volumen100W. Bowyer and J. Nichols for Lockyer Davis, printer to the Royal Society, 1810 |
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Página 20
... glass free from metallic oxides ; and in a tray of platina . In some of the processes , in which the heat was rapidly applied , some of the gray matter , which I have formerly described as a pyrophorus , passed over in distillation ...
... glass free from metallic oxides ; and in a tray of platina . In some of the processes , in which the heat was rapidly applied , some of the gray matter , which I have formerly described as a pyrophorus , passed over in distillation ...
Página 29
... glass , filled with hydrogene gas , they combined with great energy , producing most vivid heat and light , and they composed an alloy of a dark copper hue , brittle , infusible at a heat below redness , and possessing a crystalline ...
... glass , filled with hydrogene gas , they combined with great energy , producing most vivid heat and light , and they composed an alloy of a dark copper hue , brittle , infusible at a heat below redness , and possessing a crystalline ...
Página 38
... glass only ; and the wires for completing the VOLTAIC , and common electrical circuit , were See Dr. PEARSON's elaborate experiments , on the decomposition of water by electrical explosions . NICHOLSON's Journal , 4to . vol . I. page ...
... glass only ; and the wires for completing the VOLTAIC , and common electrical circuit , were See Dr. PEARSON's elaborate experiments , on the decomposition of water by electrical explosions . NICHOLSON's Journal , 4to . vol . I. page ...
Página 41
... glass , water , mercury , and wires of platina only , were present . I In the first series 1000 double plates were used , the two cones were of platina , and contained about of a cubical inch each , and filaments of asbestus were ...
... glass , water , mercury , and wires of platina only , were present . I In the first series 1000 double plates were used , the two cones were of platina , and contained about of a cubical inch each , and filaments of asbestus were ...
Página 42
... glass negatively electrified ; and a minute quantity of acid , which could barely be made evident by litmus , in the glass positively electrified . This acid rendered cloudy nitrate of silver . Whether its presence was owing to ...
... glass negatively electrified ; and a minute quantity of acid , which could barely be made evident by litmus , in the glass positively electrified . This acid rendered cloudy nitrate of silver . Whether its presence was owing to ...
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Términos y frases comunes
acid gas action alkalies ammonia animals aorta appearance artery Bakerian lecture Barom barytes blood blue bow body brine calculus carbonate cavity coagulated colour combination combustion common salt compound contained critical separation cubical inches decomposed decomposition dissolved distilled earths earthy muriates electricity evaporation examined experiments Fair formed glass glucine grains hydrogene kind light liquor luminous magnesia matter MDCCCX medusa membrane metallic METEOROLOGICAL JOURNAL minute muriate of magnesia muriate of potash muriate of soda muriatic acid muriatic acid gas NE 1 Cloudy nearly nitrogene nitrous acid observed opaque oviduct oxide oxygene oxymuriatic acid gas phænomena phosphate phosphorus platina portion potash potassium prism produced proportion Rain rays red bow refraction sea water shew Six's Therm sodium solution species specific gravity stomach streaks substance sulphate of lime sulphate of magnesia sulphur sulphuretted hydrogene supposed SW 1 Cloudy tellurium tion tube uric acid urine vessel VOLTAIC
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Página 281 - ... observed to be accompanied by the appearance of an effusion of a luminous . fluid upon the surface of the animal, more particularly about the head, which may be received upon the hand, or other bodies brought into contact with the insect at the moment, and these exhibit a phosphoric light for a few seconds afterwards. This fluid, however, I never could discover in the form of moisture, even upon the clearest glass, although examined immediately with the most scrupulous attention by a lens : it...
Página 95 - The process is a very simple one *. The bitter liquor from the pits is boiled for some hours in the pans, which are used in summer to prepare common salt; and the impurities, which rise to the surface, are removed by skimming. During the evaporation, a portion of common salt separates; and this, as it is too impure for use, is reserved for the purpose of concentrating the brine in summer. The evaporated bitter liquor is then removed into wooden coolers eight feet long, five feet wide, and one foot...
Página 276 - I have discovered in the common glow worm, on the inner side of the last abdominal ring, two bodies, which to the naked eye appear more minute than the head of the smallest pin. They are lodged in two slight depressions, formed in the shell of the ring, which is at these points particularly transparent. On examining these bodies under the microscope, I found...
Página 270 - The phenomenon, he says, had never been witnessed before by any of the company on board, although some of the crew had been two or three times round the globe. I consider this account of Mr. Langstaff very interesting and important, as it proves that the diffused light of the sea is produced by an assemblage of minute medusae on the surface of the water.
Página 242 - ... analogy of chemistry, to suppose the large quantity of oxygen combined with the potassium, which we know has an intense affinity for oxygen, and which, from some experiments, I am inclined to believe, is capable of combining directly with more oxygen than exists in potash than with the oxymuriatic acid, which, as far as is known, has no affinity for that substance.
Página 284 - Experiment 4. — The luminous substance of a glowworm was exposed to a degree of heat which would have been sufficient to inflame phosphorus, without increasing the brilliancy of its...
Página 80 - The purging had abated ; his pulse beat 100 in a minute, and was feeble. A large abscess had formed on the outside of the elbow, which was opened, and half a pint of reddish brown matter was discharged with sloughs of cellular membrane floating in it. The lower part of the arm became much smaller, but the upper part continued tense. A poultice was applied to the wound. The lower portion of the arm and the forearm were covered with circular stripes of soap cerate. He was ordered to take the bark,...
Página 265 - I then put some sea water that had been rendered particularly clear, by repeated filtrations, into a large glass, and having floated in it a fine cloth. on which I had previously collected a number of luminous points, several of them were liberated, and became distinctly visible in their natural element, by placing the glass before a piece of dark coloured paper. They were observed to have a tendency to come to the surface of the water, and after the glass was set by for some time, they were found...
Página 27 - When tellurium is made the positive surface in water, oxygen is given off; when it is made the negative surface, the voltaic power, being from a battery composed of a number of plates exceeding 300, a purple fluid is seen to separate from it, and diffuse itself through the water ; the water gradually becomes opaque and turbid, and at last deposits a brown powder. The purple fluid is, I find, a solution of a compound of tellurium and hydrogen in water...