Poisonous Soda Water
The beverage called soda water is frequently contaminated both with copper and lead; these metals being largely employed in the construction of the apparatus for preparing the carbonated water,117 and the great excess of carbonic acid which the water contains, particularly enables it to act strongly on the metallic substances of the apparatus; a truth, of which the reader will find no difficulty in convincing himself, by suffering a stream of sulphuretted hydrogen gas to pass through the water.—See p. 70.
Footnotes
117 Some manufacturers have been hence induced to construct the apparatus for manufacturing soda water wholly either of earthenware or of glass. Mr. Johnston, of Greek Street, Soho, was the first who pointed out to the public the absolute necessity of this precaution.