162 



(6) Anthony, Bertha Van H., and Ekroth, C. V.: 



1916 Journal of Bacteriology, Vol. 1, No. 2. 



(7) Sorensen, S. P. L. : 



Ergebnisse D. Physiologie, Vol. 12, page 416. 



(8) Michaelis and Marcova: 



1912 Zeitschr. f. Immunitatsforschung, Vol. 14. 



(9) Brunn: 



1913 Ueber das Desinfectionsvermogen der Sauren Diss. Berlin. 



(10) Clark, Wm. Mansfield, and Lubs, H. A.: 



1915 Journal of Infectious Diseases, Vol. 17, No. 1. 



(11) Loomis, N. E., and Meacham, M. R. : 



Note at end of article in 1916 Journal of American Chemical 

 Society, Vol. 38, No. 11. 



(12) Committee on Standard Methods A. Pub. Health: 



(1905-1913) also, Standard Methods examination of Water and 

 Sewage, 1912. 



(13) Report of Committee on Standard Methods of Milk Analysis 



(Bacteriological) . 



1916 American Journal of Public Health, Vol. 6, No. 12. 



(14) Conn, H. Joel: 



1915 New York Agricultural Experiment Station Technical 

 Bulletin No. 38, page 17. 



(15) 



1894 The Analyst, page 256. 



(16) Noyes, H. A.: 



1916 Science New Series, Vol. 44, No. 1144. 



(17) Fellers, C. R.: 



1916 Soil Science, Vol. 2, No. 3, September. 



(18) Stieglitz, Acree, Jones. Noyes, A. A., etc.: 



Articles in Journal of American Chemical Society and their 

 books dealing with theory of indicators. 



(19) Itano, Arao: 



1916 Massachusetts Agricultural Experiment Station Bulletin 

 167, pages 173 and 184. 



(20) Landolt and Berstein: 



Tables on ionization constants for acids and bases. 



