Calvert, F. (Frederick) Crace', 1819-1873, Stenhouse, John, Groves, Charles Edward, 1841-1920 · Manchester : Palmer & Howe · leaf 382
veliquids, the larger tube may be kept filled. M. A. Miiller has described an instrument dependingfor its action on the production of white light, by passingthe light first through the coloured solution, and thenthrough a disc of glass of the colour complementary tothat of the solution. The… … COL OR OME TERS. 345 the lower part of the tubes a mirror is fixed similar to thatfor a microscope. At the upper part of the tubes prismsare so placed that the light from them forms, at the pointof sight, a disc divided into two parts, consequently, whenthe liquids arc equally coloured, there will…
Dyes and dyeing · Calico-printing
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