Twentieth century hand-book for steam engineers and electricians with questions and answers; a practical non-technical treatise .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 1472
ectropqin. This is composed of 4 ozs. of bichromate of soda, 11/4pints of boiling water, mixed and cooled; then while slowly Primary Batteries 1443 stirring add little by little 3 ozs. siilphnric.aeid taken outof a carbon (not diluted). Never pour water into acid. The bichromate of soda has so much… … Fig. 690oxide plate of edison-lalande cell and then mercury placed in bottom and zinc set in. Sim-ply take out old cup and insert new one in its place. The old zinc should be cleaned^ porous cup washed andthen boiled in water and both placed in stock. These cells should be left on open circuit when…
