Henleys' Twentieth Century Book of Recipes, Formulas and Processes: Containing Nearly Ten Thousand Selected Scientific, Chemical, Technical and Household Recipes, Formulas and Processes for Use in the Laboratory, the Office, the Workshop and in the Home

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Gardner Dexter Hiscox
N.W. Henley Publishing Company, 1907 - Formulas, recipes, etc - 781 pages
 

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Page 529 - Almanac. The object of this table Is to enable any manipulator who is about to enlarge (or reduce) a copy any given number of times, to do so without troublesome calculation. It is assumed that the photographer knows exactly what the focus of his lens is, ami that he is able to measure accurately from its optical centre.
Page 340 - Some process butters are on the market which can be distinguished from fresh butter only with extreme difficulty. During the last few years considerable progress has been made in the attempt to renovate butter in such a way that it will appear like fresh butter in all respects. A study must be made of these methods if we would obtain reliable results. The "spoon...
Page 179 - ... to keep off the dirt. This removes the objection existing in small families against purchasing a whole cheese at a time. The common practice of buying small quantities of cheese should be avoided, as not only a higher price is paid for any given quality but there is little likelihood of obtaining exactly the same flavor twice running.
Page 165 - This consists of pure zinc filings combined with twice their weight of mercury, a gentle heat being employed to render the union more complete. It is best applied as soon as made. Its color is gray, and it is said to be effective and durable.
Page 31 - Reduce the first two ingredients to ч very fine powder and mix them well; moisten the two surfaces to be united with a small quantity of white of egg to make them adhesive; then mix the powder very rapidly with the white of egg and apply the mixture to the broken surfaces. If they are large, two persons should do this, each applying the cement to one portion. •The pieces are then firmly pressed together and left undisturbed for several days.
Page 164 - Ten pounds fine yellow ocber; 4 pounds ground litharge; 4 pounds whiting, and i pound of hemp, cut up fine. Mix together thoroughly with linseed oil to about the consistency of putty. Gutter Cement. — Stir sand and fine lime into boiled paint skins while hot and thick. Use hot. Cement for Pipe Joints. — A good cement for making tight joints in pumps, pipes, etc., is made of a mixture of 15 parts of slaked lime, 30 parts of graphite, and 40 parts of barium sulphate.
Page 20 - ... parts of alcohol and 4 parts of ether. This mixture should be Kept in a well-corked bottle, and when celluloid articles are to be mended, the broken surfaces are painted over with the alcohol and ether mixture until the surfaces soften: then press together and bind and allow to dry tor at least 24 hours.
Page 383 - The horns should be treated in this way from 2 to 4 times at intervals of 5 minutes. If, during the interval of 5 minutes after one or more applications, a little blood appears in the center of the horn, it will then only be necessary to give another very slight rubbing with the potash. The following directions should be carefully observed: The operation is best performed when the calf is under 5 days old, and should not be attempted after the ninth day.
Page 339 - ... inch at the lower end, is then suspended by pinning, so that its narrow end is immersed in the solution, and is allowed to stand for a couple of hours. The best results are obtained if the paper is so suspended that air can circulate freely around it, ie, not allowing it to touch anything except the pin and the liquid in the dish. If turmeric be present a cherry-red color forms on the filter paper a short distance below the upper limit to which the liquid is absorbed by the paper, frequently...
Page 564 - German silver the solution may be worked at a low temperature, the solution being weakened and a small surface of anode exposed. German silver has the power of reducing gold from its solution in cyanide (especially if the solution be strong) without the aid of the battery; therefore, the solution should be weaker, in fact, so weak that the German silver will not deposit the gold per se ; otherwise the deposit will take place so rapidly that the gold will peel off when being burnished or even scratch...

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