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Scientific American, Vol. 39, No. 5 (1878) (1878)
leaf 8
sign of wear, have used, with some ad- while the latter were com- vantages, ordinary cotton pletely worn out. in solution in ammonia at But the most remark- 22°, containing fifteen per able instance is that of cent of hydrated carbon- locomotive slide valves, ate of copper. which, though in use for… … ing establishment. bottle, as this product is © 1878 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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