Spon, Ernest, Haldane, Robert, Lock, Charles G. Warnford (Charles George Warnford), 1853-1909 · London ; New York : E. & F.N. Spon · leaf 209
197 FiLTERmG — Under special conditions. filters. In France, the oil to be puri- subiected to no process of purification fied is received into perforated boxes beyond what is attained by allowing it carpeted with carded cotton (wadding) ; to'deposit impurities and repeatedly de- elsewhere, cotton… … 0 oc/o 0 O 0 o 0 a 0 o<& 1 0 0 0 0 0 o' a 0 o 0 a a O 0 O 0*^0 0 1 O 0(;0 0 0 oi Fig. 173. animal charcoal form the filter ; a bed of to secure limpidity, but a capacity for dry moss, on the " Grouvelle et Jaunez " lengthened preservation by eliminating system ; layers of sand, gypsum, and the…
Workshop recipes · Technology · Industrial arts
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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