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Turmeric Test Paper

Pre- by the powerful apparatus employed by manpared with a decoction of 2 ounces turmeric ufacturers of soda waters (see No. 718); the gas being evolved by the action of weak sulphuric acid on marble chalk, whiting, &c. Some few obtain their carbonic acid gas by the action of an acid and an alkali introduced into the bottle, and instantly corked. The to 1 pint water; is turned brown by alkalies, and by boracic acid and the soluble borates.