The family physician, and guide to health : in three parts ... Together with the history, causes, symptoms and treatment of the Asiatic cholera: a glossary explaining the most difficult words that occur in medical science, and a copious index; to which is added an appendix / By Daniel H. Whitney.

  • Whitney, Daniel H.
Date:
1833
Catalogue details

Licence: Public Domain Mark

Credit: The family physician, and guide to health : in three parts ... Together with the history, causes, symptoms and treatment of the Asiatic cholera: a glossary explaining the most difficult words that occur in medical science, and a copious index; to which is added an appendix / By Daniel H. Whitney. Source: Wellcome Collection.

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    ~~ 920 he ' GLOSSARY, ‘OR ly exti 2d when in nmers- | contact with the water ‘and edinjit.’ [tistherefore incapa-|sulphric acid, has a greater ble of supporting com ie me to oxygen than the hydrogen has ; * the oxygen therefore unites to it, and forms an oxide of that metal which is instantly attacked very sparingly. It.is capable | and dissolved by the acid ; the of dissolving carbon, sulphur, other constituent part of the phosphorus, arsenic, and ma-| water, the hydrogen isset free, ny other bodies. When its which by uniting with caloric, basis combines with that of] assumes.the form of hydrogen oxygen gas, water is formed ;; gas, ‘The oxygen is therefore with nitrogen it forms ammo- | the bond of union between the metal and the acid, substances. | The hissing noise or effer- Method of obtaining Hy-| vescence, observable during the process, is owing to the rapid motion excited in the mixture by means of the great number of air-bubbles quickly disengaged and breaking at the surface of the fluid. We see also in this case that two substances exert at- traction, and are even capable oi decomposing jointly a third, which neither of them is able to do singly, that is, if we pre- sent sulphuric acid alone, or iron or zine alone, to water, being applied.. It may be col-| they cannot detach the oxygen lected in the usual manner | from the hydrogen of that fluid; but if both are applied, a de- composition is instantly effect- ed. This experiment there- fore proves that the agency of | chemical affinity between twe The production of hydrogen or more bodies may be dor- “igi in the ab ay is owing | mant until itis called into ac- to the decompositon of water. | tion by the interposition of Tt is not injiions to growing vegetables.’ Very few sub- btanbeld are capable of absorb- by decomposing water... For this purpose let sulphuric acid, previously diluted with four or five times its weight of wa- ter, be poured on iron-filings, or bits of zinc, in a’small re- tort or gas bottle, called a pneumatic flask or ‘prot § as SS OOOO account of the atmospheric air contained in the disengaging a ee ee