INTRODUCTION 



At the end of the hsts (p. 226) will be found a summary of the stations made by the 

 R.R.S. 'Discovery 11' from October 193 1 to April 1933 with references to the charts 

 on which the station positions are marked. 



REFERENCES 



Association d'Oc^anographie Physique, 1937. Proc. verb., No. 2, p. 56. 



BucH, K., 1929. On the determination of pH in sea water at different temperatures. Journ. du Cons, iv, 



No. 3, pp. 267-80. 

 McClendon, J. F., 1917. The standardization of a new colorimetric method for the determination of the 



hydrogen-ion concentration, CO, tension, and CO2 and Oj content of sea water, etc. Journ. Biol. 



Cham., XXX, pp. 265-88. 

 Atkins, W. R. G., 1923. The silica content of some natural waters and of culture media. Journ. Mar. Biol. 



Ass. U.K., XIII, pp. 151-9. 

 Cooper, L. H. N., 1933. Chemical constituents of biological importance in the English Channel, November 1930 



to January 1932. Part I. Phosphate, silicate, nitrate, nitrite, ammonia. Journ. Mar. Biol. Ass. U.K., 



XVIII, pp' 677-728. Part II. Hydrogen-ion concefitration, excess base, carbon dioxide and oxygen. 



Jour^. Mar. Biol. Ass. U.K., xviii, pp. 729-54- Part III, June-December 1932. Phosphate, 



silicate, nitrite, hydrogen-ion concentration, with a comparison with wind records. Journ. Mar. Biol. 



Ass. U.K., XIX, pp. 55-62. 

 1938. Salt error in determinations of phosphate in sea water. Journ. Mar. Biol. Ass. U.K., xxiii, 



pp. 171-78. 



