Recent improvements in arts, manufactures, and mines : being a supplement to his Dictionary (1844)
Ure, Andrew, 1778-1857, Ure, Andrew, 1778-1857. Dictionary of arts, manufactures, and mines · London : Printed for Longman, Brown, Green, and Longmans · leaf 297
hen strain it off, and set it to work at 90°, with 3 pints of patent yeast ; let it stand about 20 hours ; take the scum off the top, and strain it through a hair sieve ; it will be then fit for use. One pint is sufficient to make a bushel of bread. Z. ZINC. Mr. Nicholas Troughton, of Swansea,… … represents the section of a series of retorts for calcining zinc ores, arranged and con- structed according to this invention. The retorts shown in this figure are composed of a series of fire-tiles or parallelogram slabs, a, a, a, are the slabs or tiles, which con- stitute the bottoms of the…
Industrial arts · Technology
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