Applied Chemistry: Gas Illumination. Preservation of Wood. Dyeing and Calico-printing. Preliminary observations, Volume 1

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Page 188 - It is essential that the wood be made thoroughly dry previous to the application of a protective varnish, else its decay is hastened by the impediment which the varnish offers to the evaporation of the moisture. The more effectual method of impregnating the wood throughout its mass with a chemical preservative agent was not practised to any great extent until the last century. The principal substances which have been proposed for that purpose are the following. (See Mr. John Knowles's " Inquiry into...
Page 461 - While we have given but a very imperfect sketch of this original and profound work, we have endeavoured to convey to the reader some notion of the rich store of interesting matter which it contains. The chemist, the physiologist, the medical man, and the agriculturist, will all find in this volume many new ideas and many useful practical remarks. It is the first specimen of what modern organic chemistry is capable of doing for physiology ; and we have no doubt that, from its appearance, physiology...
Page 39 - I then filled a good many bladders, and might have filled an inconceivable number more ; for the Spirit continued to rise for several hours, and filled the bladders almost as fast as a man could have blown them with his mouth, and yet the quantity of coals distilled was inconsiderable.
Page 223 - Nibelunge," such as it was written down at the end of the twelfth, or the beginning of the thirteenth century, is
Page 167 - Reaumer, water being added from time to time to replace that which is lost by evaporation. After the evolution of gas has entirely ceased, the liquid is dissolved with its own bulk of water, and finally 8 Ibs. of crystallized soda, dissolved in 12 Ibs.
Page 39 - Jire at the flame of the candle, and continued burning with violence as it issued out in a stream, which I blew out, and lighted again alternately several times.
Page 38 - I got some coal, and distilled it in a retort in an open fire. At first there came over only phlegm, afterwards a black oil, and then, likewise, a spirit arose which I could no ways condense ; but it forced my lute and broke my glasses.
Page 222 - The juice employed for communicating this dye was obtained from two different kinds of shell-fish, described by Pliny under the names of purpura and buccinum; and was extracted from a small vessel, or sac, in their throats to the amount of only one drop from each animal.
Page 42 - Society in 1808, for which he received a gold medal. (An account of the application of gas from coal to economical purposes, Phil.
Page 39 - Bladders, and pricking a Hole therein with a Pin, and compressing gently the Bladder near the Flame of a Candle till it once took Fire, it would then continue flaming till all the Spirit was compressed out of the Bladder; which was the more surprising, because no one could discern any Difference in the Appearance between these Bladders and those which are filled with common Air.

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