The Elements of Medical Chemistry: Embracing Only Those Branches of Chemical Science which are Calculated to Illustrate Or Explain the Different Objects of Medicine, and to Furnish a Chemical Grammar to the Author's Pharmacologia
Collins & Hannay, 1825 - 471 pages
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action affinity ammonia animal apparatus appears applied atmosphere atom attraction become bodies boiling bottle called caloric carbonic acid chemical cold combination common compound consequence considerable considered consists containing cooled crystals direction dissolved distilled effect electricity employed equal evaporation evident examination exist experiment explained extremely fact figure fluid force former glass grains greater heat hydrogen important inches increase influence instance introduced iron less light lime liquid liquor manner matter means measure metal mixed mixture muriatic nature necessary nitric acid observed obtained operation oxide oxygen particles pass piece portion potass precipitate present pressure principle produced properties proportion quantity receiver rendered represented result saline salt scale separated shewn simple soda solid soluble solution specific gravity spirit substances sufficient sulphuric acid surface temperature termed tion tube unite vapour various vessel weight whole
Page iii - Alas ! What an inconsiderable creature am I in this prodigious ocean of waters ! My existence is of no concern to the universe ; I am reduced to a kind of nothing, and am less than the least of the works of God.
Page 126 - ... till it crystallizes on cooling. Alter the position of every crystal, once at least every day, with a glass rod, that all the faces may be alternately exposed to the action of the liquid ; for the face on which the crystal rests never receives any increase.
Page 125 - The salt to be crystallized is to be dissolved in water, and evaporated to such a consistency that it shall crystallize on cooling. Set it by, and when quite cold pour the liquid part off the mass of crystals at the bottom, and put it into a flat-bottomed vessel.
Page 212 - I / vapour playing on the bottom of the capsules heats them to any required temperature ; and being itself continually condensed, it runs back into the kettle to be raised again in ceaseless cohobation. With a shade above to screen the vapour chest from soot, the kettle may be placed over a common fire. The orifices not in use are closed with tin lids. In drying precipitates, the tube of a glass funnel may be corked and placed with its filter directly into the opening of a proper size.
Page 159 - they were in large flocks containing both species in the proportion of two of the former to one of the latter " (the present)
Page iv - The drop, says the fable, lay a great while hardening in the shell, until by degrees it was ripened into a pearl, which falling into the hands of a diver, after a long series of adventures, is at present that famous pearl which is fixed on the top of the Persian diadem.
Page 323 - Mr. Spalding, the celebrated diver, observed, that whenever he used a diet of animal food, or drank spirituous liquors, he consumed in a much shorter time the oxygen of the atmospheric air in his diving-bell ; and therefore he had learned from experience to confine himself to a vegetable diet, and to water for drink, when following his profession.
Page 373 - ... instantly ; and its deadly agency is rapidly exerted when put in contact with any of the tissues of the body, through which it penetrates with astonishing rapidity. Even when mixed with a portion of air, it has proved immediately destructive. Dr. Paris refers to the case of a chemist of his acquaintance, who was suddenly deprived of sense as he stood over a pneumatic trough in which he was collecting this gas. From the experiments of Dupuytren and Thenard, air that contains a thousandth part...
Page 358 - ... a capacious receiver is luted to the retort, and six pints are distilled over. The specific gravity of the product is 0-995: it must be preserved in bottles excluded from the light, and being subject to decomposition, should not be prepared in large quantities at a time.
Page 582 - The fermentation and putrefaction of organized substances in the free atmosphere, are noxious processes; beneath the surface of the ground they are salutary operations. " In this case, the food of plants is prepared where it can be used ; and that which would offend the senses and injure the health, if exposed, is converted by gradual processes into forms of beauty and of usefulness ; the fetid gas is rendered a constituent of the aroma of the flower, and what might be poison, becomes nourishment...