System of Theoretical and Practical Chemistry ...Kimber & Conrad, 1808 |
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Common terms and phrases
absorbed action alcali ammonia animals atmospheric air barytes becomes bismuth boiling burn caloric capable carbonated hidrogen gas carbonic acid carbonic acid gas charcoal chemical affinity chemistry chemists cold colour combination combustion compound contained converted corpuscular attraction decomposed decomposition degree diamond disengaged dissolved distance earth effect emitted equal EXPERIMENT exposed filled fire flame Florence flask fluid force formed gases gazeous oxid glass tube globe gradually heat Hence inch iron laws lime liquid magnesia mass means melted mercury metals mixed mixture muriatic acid gas nature nitrate nitric acid nitrous gas obtained oxid of nitrogen oxigen gas oxigenized muriatic acid particles phenomena philosophers phosphoric acid phosphorus potash produced properties proportion RATIONALE....The rays of light retort SECT soda solid solution specific gravity strata strontia substances sulphate sulphurated hidrogen gas sulphureous acid gas sulphuret sulphuric acid surface takes place temperature theory thermometer tion unites UNIV vapour vegetable vessel
Popular passages
Page 160 - After the colour has been once fixed on the leather or paper, it cannot be removed by the application of water, or water and soap, and it is in a high degree permanent.
Page 160 - When a white surface, covered with solution of nitrate of silver, is placed behind a painting on glass exposed to the solar light, the rays transmitted through the differently painted surfaces produce distinct tints of brown or black, sensibly differing in intensity according to the shades of the .picture, and where the light is unaltered, the color of the nitrate becomes deepest.
Page 17 - Essays to-, wards a Natural History of the Earth, and terrestrial bodies. Though he possessed much more knowledge of minerals than his predecessor, and on this account had greatly the advantage of him, he produced a work far less ingenious and interesting. He also proceeded on the supposition of the Mosaic history being true, and ascribed the present aspect of our globe to the influence of the general deluge. He supposed that all the substances of which the earth is composed were once in a state...
Page 84 - ... for example, soda, by a little at a time, and examine the mixture after every addition of the alkali, we find for a considerable time it will exhibit the properties of an acid ; it will have a sour taste, and convert vegetable blue colours into red : but if we continue to add greater quantities of soda, these acid properties will gradually diminish, and at last disappear altogether. At that point the combination is at an end ; it has reached its maximum in this case; for if we continue to add...
Page 39 - ... •which they might have inhabited, and the places in which they are now found, too many mountains intervene to suppose them carried thither by any other means than a general deluge.™ The most patient and accurate examinations of detached mineral substances, and of the strata of the globe, which late inquirers have made, afford every reason to believe, that the earth was, for a considerable time, wholly overflowed with water. And, to crown all, as voyagers and travellers have explored new regions...
Page 92 - They produce fire with great facility, and spread it in a wonderful manner. To produce it they take two pieces of dry soft wood, one is a stick about eight or nine inches long, the other piece is flat : The stick they shape into an obtuse point at one end, and pressing it upon the other, turn it nimbly by holding it between both their hands...
Page 124 - Spain, a kind of earthen jars, called buxaros, is used, the earth of which is so porous, being only half-baked, that the outside is kept moist by the water which filters through it ; and", though placed in the sun, the water in the jar becomes as cold as ice. It is a common practice in China, to cool wine or other liquors by wrapping a wet cloth round the bottle, and hanging it up in the sun. The water in the cloth evaporates, and thus cold is produced. Ice may be produced at any time by the evaporation...
Page 161 - When the solar rays are passed through a print and thrown upon prepared paper, the unshaded parts are slowly copied ; but the lights transmitted by the shaded parts are seldom so definite as to form a distinct resemblance of them, by producing different intensities of colour. The images formed by means of a camera obscura, have been found too faint to produce in any moderate time an effect upon the nitrate of silver.
Page 55 - ... largely to this change ; but the instances of the abuse of spirits are so innumerable, and those of this surprising combustion are so extremely rare, that very little satisfaction can be obtained from this explanation.
Page 190 - ... water. To the elevated extremity lute another wide glass tube, filled with small bits of sulphur, and secured at the further end, so that the sulphur may be pushed forward by means of a wire, without allowing the inside of the tube to communicate with the external air. Heat the porcelain tube, and, consequently, the charcoal which it contains, to redness, and continue the heat, till...