BIBLIOGRAPHY

[1] Lunge and Landolt. Jour. Soc. Dyers and Colourists, Nov. 25, 1885.

[2] Kershaw. Jour. Soc. Chem. Ind., 1912, 31, 54.

[3] Rickard. Quar. Bull. Ohio Board of Health, Oct.-Dec., 1904.

[4] Race. Jour. Amer. Waterworks Assoc., 1918, 5, 63.

[5] Rabs. Hygienische Rundschau, 1901, 11.

[6] Winslow. Public Health Rpts. U. S. P. H. S., 1917, 32, 2202.

[7] Tolman. Jour. Amer. Waterworks Assoc., 1917, 4, 337.

[8] Pitcher and Meadows. Jour. Amer. Waterworks Assoc., 1917, 4, 337.


CHAPTER IX