Robinson, H. P. (Henry Peach), 1830-1901, author, Abney, William de Wiveleslie, Sir, 1843-1920, author, Piper & Carter, publisher · London : Piper & Carter · leaf 36
24 TESTING STRENGTH OV SILVER BATH. that very nearly (but not quite) all the silver is dissolved up. Then evaporate off all the fluid and allow it to cool, when water can be added to such au extent that it is over strength for the bath. Now measure the whole bulk of the solution in a glass measure,… … Fig. 6. inside of which is a graduated scale showing grains ; C is a liollow glass cylinder, which has a little glass ball filled with mercury. When immersed in water, the instrument sinks till the scale reads 0 — that is, A B is deeply immersed. When any soluble salt is dissolved in the water, the…
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