LITERATURE CITED 



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and R. Lewis. 1927. Surface-catches of ma- 

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Atkins, W. R. G. 1923. The silica-content of some nat- 

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1925. Seasonal changes in the phosphate- 

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1928. Seasonal variation in the phosphate and 



silicate content of sea water during 1926 and 1927 



in relation to the phytoplankton crop. Jour. Marine 



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 Bigelow, H. B., and M. Leslie. 1930. Reconnaissance 



of the waters and plankton of Monterey Bay, July, 



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the ocean" by Murray and Hjort, pp. 307-386. 



London. 

 1928. The conditions of life for plankton in 



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 Jacobsen, J. P. 1921. Manuel pratique de I'analyse de 



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 ______ 1925. Die Loslichkeit vonSauerstoff im Meer- 



wasser. Medd. Komm. Havundersog., Serie Hydro- 



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estimation of silica. Jour. Amer. Chem. Soc, vol. 



50, pp. 2395-2398. 



Lewis, R. 1927. Surface-catches of marine diatoms 

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Lohmann, H. 1912. Untersuchungen ueber das Pflanzen- 

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Marshall, S. M., and A. P. Orr. 1927. The relation of 

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cultures in the sea. Jour. Marine Biol. Assoc. 

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Moberg, E. G. 1926. The hydrogen-ion concentration of 

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oxygen in the Pacific as an index of the circulation 

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Pettersson, V. I. 1928. Apparatus for quantitative 

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Poole, H. H., and W. R. G. Atkins. 1926. On the pene- 

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Ruud, J. T. 1932. On the biology of southern Euphausi- 

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Wenner, F, E. H. Smith, and F. M. Soule. 1930. Appa- 

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Whipple, G. C. 1927. The microscopy of drinking wa- 

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