Chemistry, Theoretical, Practical, and Analytical: As Applied and Relating to the Arts and Manufactures, Volume 2

Front Cover
William Mackenzie, 1853
0 Reviews
Reviews aren't verified, but Google checks for and removes fake content when it's identified

What people are saying - Write a review

We haven't found any reviews in the usual places.

Other editions - View all

Common terms and phrases

Popular passages

Page 1109 - For in the hand of the Lord there is a cup, and the wine is red ; it is full of mixture : and he poureth out of the same : but the dregs thereeof, all the wicked of the earth shall wring them out, and drink them.
Page 1091 - The bright sparkling hard waters, which gush out in frequent springs from our chalk and other limestone rocks, are relished to drink, not merely because they are grateful to the eye, but because there is something exhilarating in the excess of carbonic acid they contain and give off as they pass through the warm mouth and throat; and because the lime they hold in solution removes acid matters from the stomach, and thus acts as a grateful medicine to the system.
Page 1075 - ... animal charcoal, when a small quantity of the solution should be drawn off and filtered ; if not colourless, a little more charcoal must be added. When all colour is removed, press the liquor through silk, as linen absorbs more varnish, and afterwards filter it through fine blottingpaper.
Page 982 - ... shape of the vessel, and formed of a number of metal rods, so arranged that the evaporating surface given to the syrup is increased as much as possible. The wheel, half its circumference being immersed in the liquid, is kept constantly revolving ; so that by exposing fresh portions of the heated syrup to the action of the atmosphere at each succeeding revolution, the evaporation of the aqueous particles is rendered more rapid than it otherwise would be while the temperature is at the same time...
Page 1075 - ... and heat the whole to ebullition. When the lac is dissolved, cool the solution, and impregnate it with chlorine, till the lac is all precipitated. The precipitate is white, but its colour deepens by washing and consolidation ; dissolved in alcohol, lac bleached by the process above-mentioned yields a varnish, which is as free from colour as any copal varnish.
Page 1093 - Wagenmann, for example, found that when vinegar is filtered through pure quartz sand, the first portion of liquid that runs through is deprived of almost all its acid, and the vinegar does not pass through unchanged until the sand has become well charged with acid. The same authority also states that potato-brandy diluted with water and filtered through quartz-sand, yields at first pure water, then a mixture of water and alcohol deprived of its fusel-oil, and, lastly, the original mixture unaltered....
Page 966 - At the time of harvest, they bruise it when ripe in mortars, and set the strained juice in vessels till it is concreted in the form of snow, or white salt. This, when scraped, they mix with bread, or rub it with water, and take it as pottage ; and it is to them more wholesome and pleasing than the honey of bees.
Page 875 - ... base. Potassa and soda soaps are readily soluble in hot water and alcohol ; the addition of a quantity of water to the aqueous solution produces a precipitation, the neutral salts of stearic and margaric acids decomposing into free alkali, which remains in solution ; and acid stearate and margarate of alkali, which precipitate in the form of pearly crystalline scales.
Page 991 - Wood use condensers, which consist of one or more series of iron or copper pipes, fixed to boxes at each end, with partitions to direct the current of the vapour. Above each series of pipes, is fixed a trough, always kept full of water, and so constructed that the water trickles in a gentle shower uniformly spread over the pipes, so as to keep them well covered with a thin film. The lowest pipe is connected with a small pump worked by the engine, which draws the condensed vapour, and any air that...
Page 991 - They are also easily replaced, not requiring any mechanical skill, and take up less space for shipment. The superior economy of water in these condensers is owing to the condensing water being evaporated, and carrying away not merely sensible but latent heat. The ordinary method of condensation is similar to that employed in the condensers of steam engines, when the steam is led into a vessel where it is brought into contact with a stream of cold water. In this case, as the condensing water must...

Bibliographic information