Conversations on Chemistry: In which the Elements of that Science are Familiarly Explained and Illustrated by Experiments, and Sixteen Copperplate Engravings |
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absorb acid gas affinity alcohol alkali ammonia animal appears atmospherical air attraction blood boiling burn called caloric carbonat carbonic acid carbonic acid gas Caroline charcoal chemical chemistry chemists chyle cold colour combination combustion composed compound salts consists contain converted copper decomposed decomposition degree disengaged dissolved earth effect electricity Emily ether evaporation experiment fecula fermentation fire flame fluid freezing gaseous gases gelatine glass hydrogen hydrogen gas ingredients iron kind lamp latent heat light lime liquid lungs matter means melted metals mineral mixed mucilage muriatic acid nature nitric acid nitrogen nourishment observe obtained oxy-muriatic oxyd oxygen gas particles peculiar phosphorus plant PLATE potash Pray principle produced properties proportion purpose quantity of caloric respiration separate simple bodies Sir H solid solution stance substance sulphat sulphuric acid suppose surface tained takes place tannin temperature thermometer tion tube vapour vegetable vessel volatile Voltaic battery whilst wire
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Page 5 - IDE, of the said District, hath deposited in this office, the title of a book, the right whereof he claims as proprietor, in the words following, to wit : " Inductive Grammar, designed for beginners. By an Instructer." In conformity to the act of the Congress of the United States...
Page 4 - Mrs. Marcet's Conversations on Chemistry, in which the Elements of that Science are familiarly explained and illustrated by Experiments.
Page 5 - An act for the encouragement of learning, by securing the copies of maps, charts, and books, to the authors and proprietors of such copies during the times therein mentioned,' and extending the benefits thereof to the arts of designing, engraving, and etching historical and other prints.
Page 339 - Heat, matter of. See Caloric. Hermetically. A term applied to the closing of the orifice of a glass tube, so as to render it air-tight. Hermes, or Mercury, was formerly supposed to have been the inventor of chemistry ; hence a tube which was closed for chemical purposes, was said to be Hermetically or chemically sealed. It is usually done by melting the end of the tube by means of a blowpipe. Hydrogen. A simple substance; one of the constituent parts of water. gas. Solid hydrogen united with a large...
Page 339 - Gluten. A vegetable substance somewhat similar to animal gelatine. It is the gluten in wheat flour which gives it the property of making good bread, and adhesive paste. Other grain contains a much less quantity of this nutritious substance. Grain. The smallest weight made use of by chemical writers. Twenty grains make a scruple ; 3 scruples a drachm • 8 drachms, or 480 grains, make an ounce ; 12 ounces, or 5760 grains, a pound troy. The advoirdupois pound contains 7000 grains.
Page 20 - ... consequence ? Caroline. The caloric forces itself in greater abundance between the particles of the fluid, and drives them to such a distance from each other, that their attraction of aggregation is wholly destroyed : the liquid is then transformed into vapour. Mrs. B. Very well ; and this is precisely the case with boiling water, when it is converted into steam or vapour, and with all bodies that assume an aeriform state. Emily. 1 do uot well understand the word aeriform ? Mrs. B. Any elastic...
Page 344 - An abiuidant mineral found on the English coasts, and elsewhere. Some are sulphurets of iron, and others sulphurets of copper, with a portion of alumine and silex. The former are worked for the sake of the sulphur, and the latter for sulphur and copper. They are also called Marcasites and Fire-stone.
Page 357 - ... of each two ounces, and one drachm of corrosive sublimate; rub them together, and make them into a paste with water. With this, copper utensils intended to be silvered, that have been previously boiled •with acidulous tartarite of potash and alum, are to be rubbed ; after which they are to be made red-hot, and polished.
Page 55 - Such was, from time immemorial, the generally received opinion respecting the cause of dew ; but it has been very recently proved by a course of ingenious experiments of Dr. Wells, that the deposition of dew is produced by the cooling of the surface of the earth, which he has shown to take place previously to the cooling of the atmosphere ; for on examining the te-mperature of a plot of grass just before the dewfall, he found that it was considerably colder than the air a few feet above it, from...
Page 339 - GRAIN. The smallest weight made use of by chemical writers. Twenty grains make a scruple; 3 scruples a drachm; 8 drachms, or 480 grains, make an ounce; 12 ounces, or 5760 grains, a pound troy. The avoirdupois pound contains 7000 grains. GRANULATION. The operation of pouring a melted metal into water, in order to divide it into small particles for chemical purposes. Tin is thus granulated by the dyers before it is dissolved in the proper acid. GRAVITY.