AQUATIC ORGANISMS AND EXTERNAL METABOLITES 515 



. 1959. Preliminary studies on the response of marine algae to anti- 

 metabolites. Preprints International Oceanographic Congress, pp. 918- 

 920. American Association for the Advancement of Science, Wash- 

 ington, D. C. 



Johnstone, J., A. Scott, and H. C. Chadwick. 1924. Marine Plankton, 

 Liverpool University Press, Liverpool, England. 



Karlson, P., and M. Luscher. 1959. Pheromones: a new term for a class 

 of biologically active substances. Nature, 183, 55-56; The proposed 

 biological term "Pheromone." Ibid., 183, 1835. 



Klein, G., and E. Klein. 1957. The evolution of independence from 

 specific growth stimulation and inhibition in mammalian tumour- 

 cell populations. Symposia Soc. Exptl. Biol., 11, 305-328. 



Krause, H. R. 1959. Biochemische Untersuchungen uber den post- 

 mortalen Abbau von toten Plankton unter aeroben und anaeroben 

 Bedingungen. Arch. Hydrobiol., 24 (suppl.), 297-337. 



Krogh, A. 1931. Dissolved substances as food of aquatic organisms. 

 Biol. Rev., 6, 412-442. 



Lewin, R. A. 1956. Extracellular polysaccharides of green algae. Can. 

 J. Microbiol., 2, 665-672. 



Lewin, J. C, and R. A. Lewin, 1959. Auxotrophy and heterotrophy in 

 marine littoral diatoms. Preprints International Oceanographic Con- 

 gress, pp. 928-929. American Association for the Advancement of 

 Science, Washington, D. C. 



LoosanofT, V. L. 1958. Discussion on D. P. Wilson. Some problems in 

 larval ecology related to the localized distribution of bottom animals. 

 Perspectives in Marine Biology, pp. 99-103. University of California 

 Press, Berkeley, Calif. 



Lucas, C. E. 1938. Some aspects of integration in plankton communities. 

 J. conseil: Conseil permanent intern, exploration mer, 13, 309-322. 



. 1947. The ecological effects of external metabolites. Biol. Revs., 



22, 270-295. 



. 1949. External metabolites and ecological adaptations. Symposia 



Soc. Exptl. Biol., 3, 336-356. 



1955. External metabolites in the sea. Paper Marine Biol. 



Oceanog., Deep-Sea Research, 3 (suppl.), 139-148. 



1958. External metabolites and productivity. Rapp. proc. verb. : 



Conseil permanent intern, exploration mer, 144, 155-158. 



Margalef, R. 1958. Temporal succession and spatial heterogeneity in 

 phytoplankton. Perspectives in Marine Biology, pp. 323-349. Uni- 

 versity of California Press, Berkeley, Calif. 



Marshall, S. M., and A. P. Orr. 1952. On the biology of Calanus fin- 

 marchicus 7. Factors affecting egg production. /. Marine Biol. 

 Assoc. United Kingdom, 30, 527-548. 



