[866] “On the Presence of Lead and Copper in Aërated Waters,” by Dr. James Milne, Chem. News, xxxi. p. 77.
Accidents may also occur from the use of copper boilers. Mr. W. Thompson found in one case[867] no less than 3·575 grains in a gallon (51 mgrms. per litre) in water drawn from a kitchen boiler.
[867] Chem. News, xxxi. No. 801.
At Roubaix, in France, sulphide of copper had been deposited on the roof, as a consequence of the use of copper flues; the sulphide was changed into sulphate by the action of the air, and washed by the rain into the water-tank.[868]
[868] Author’s Dictionary of Hygiène, p. 167.