Studies of Photo-synthesis in Marine Algce. 



51 



EEFEEENCES. 



(1) Miss F. Buchanan, 'Quart. Jl. Exper. Physiol.,' vol. 1, p. 1 (1908). 



(2) Wundt, ' Principles of Physiological Psychology ' (Translation by Titchenei'), New 



York, 1910. 



(3) Jolly, 'Brit. Med. Jour.,' October, 1910 ; 'Quart. Jl. Exper. Physiol.,' vol. 4, p. 67 



(1911). 



(4) Snyder, ' Amer. Journ. of Physiol.,' vol. 26, p. 474 (1910). 



(5) Waller, ' Quart. JL Exper. Physiol.,' vol. 1, p. 251 (1908). 



(6) Sherrington, ' The Integrative Action of the Nervous System,' London, 1911. 



(7) Forbes and Gregg, 'Amer. Jour, of Physiol.,' vol. 37, p. 118 (1915). 



(8) Piper, ' Elektrophysiologie menschlicher Muskeln,' Berlin, 19.12. 



(9) Miss F. Buchanan, ' Quart. Jl. Exper. Physiol.,' vol. 1, p. 211 (1908). 



Studies of Photo-synthesis in Marine Algce. — 1. Fixation of Carbon 

 and Nitrogen from Inorganic Sources in Sea Water. 

 2, Increase of Alkalinity of Sea Water as a Measure of 

 Photo- synthesis. 



By Benjamin Moore, F.R.S., Edward Whitley, M.A., and T. Arthur 



Webster. 



(Original MS. received February 27, — Received in revised form December 2, 



1920.) 



(From the Marine Biological Station, Port Erin, Isle of Man, and the Department of 

 Applied Physiology, Medical Research Council.) 



The series of experiments recorded in this commuxiication were carried out 

 at Port Erin ; the subsequent analyses for amounts of nitrogen fixed were 

 made at the temporary laboratory of the Department of Applied Physiology, 

 M.PuC, at the Lister Institute. 



The results of the series confirm and amplify those obtained with fresh- 

 water algse,* which showed a convincing uptake of nitrogen from the air, but 

 on account of the change of the medium of growth from fresh to sea water, 

 there are several important modifications in the medium itself as well as in 

 the growing algse, which appear to us to possess considerable importance in 

 the annual life of the sea, and in the inductance at certain definite periods of 

 the year of increased processes of cell-division and reproduction of species, 

 and possibly in guiding the development of variations in species, and the 



* Moore and Webster, 'Eoy. Soc. Proc.,* B, vol. 91, p. 201 (1920). 



