EXCRETION 303 



15a. Goodbody, I., "Nitrogen excretion in Ascidiacea," J. Exp. Biol., 34, 297 

 (1957). 



16. Grafflin, C. L. and Gould, R. G. Jr., "Renal function in marine teleosts. 

 2," Biol. Bull., 70, 16(1936). 



17. Hartman, F. A., Lewis, L. A., Brownell, K. A., Shelden, F. F. and 

 Walther, R. F., "Some blood constituents of the normal skate, " Physiol. 

 Zooi, 14, 476 (1941). 



18. Heidermanns, C., "Exkretion und Exkretstoffwechsel der Wirbellosen," 

 Tabid. Biol., 14, p. 209 (1937). 



19. Hoppe-Seyler, F. A., "Die Bedingungen und die Bedeutung biologischer 

 Methylierungsprozesse," Z. Biol., 90, 432 (1930). 



20. Hoppe-Seyler, F. A., "Trimethylaminoxyd und andere Stickstoffbasen in 

 Krebsmuskeln," Hoppe-Seyl. Z, 221, 45 (1933). 



21. Hoppe-Seyler, F. A. and Schmidt, W., "Ueber das Vorkommen von 

 Trimethylaminoxyd," Z. Biol., 87, 59 (1927). 



22. Kasturirangan, L. R., "The allantoplacenta of the sea snake Hydrophis 

 cyanocinctus Daudin," /. Zool. Soc. India, 3, 277 (1952). 



23. Kempton, R. T., "Studies on the elasmobranch kidney. 2. Reabsorption 

 of urea by the smooth dogfish, Mustelus canis," Biol. Bull., 104, 45 (1953). 



24. Kennedy, G. Y. and Vevers, H. G., "The biology of Asterias rubens L. 

 A porphyrin pigment in the integument," /. Mar. Biol. Ass. U.K., 32, 235 

 (1953). 



25. Kennedy, G. Y. and Vevers, H. G., "The occurrence of porphyrin in cer- 

 tain marine invertebrates," ibid., 33, 663 (1954). 



26. Khalil, F., "Excretion in reptiles. 1. Non-protein nitrogen constituents of 

 the urine of the sea-turtle Chelone my das L," /. Biol. Chem., 171, 611 (1947). 



27. Krogh, A., "The active absorption of ions in some freshwater animals," 

 Z. vergl. Physiol., 25, 335 (1938). 



28. Krogh, A., Osmotic Regulation in Aquatic Animals (Cambridge Univ. Press, 

 1939). 



29. Kutscher, F. and Ackermann, D., "The comparative biochemistry of 

 vertebrates and invertebrates," Annu. Rev. Biochem., 2, 355 (1933). 



30. Maloeuf, N. S. R., "Physiology of excretion among the arthropoda," 

 Physiol. Rev., 18, 28 (1938). 



30a. Marchal, P., "Recherches anatomiques et physiologiques sur l'appareil 

 excreteur des Crustaces decapodes," Arch. Zool. Exp. Gen., 2 Ser., 10, 56 

 (1892). 



31. Mollitor, A., "Beitrage zur Untersuchung des ExkretstorTwechsels und 

 der Exkretion von Eriocheir sinensis,''' Zool. Jb. Abt. 3, allg. Zool. Physiol., 

 57, 323 (1937). 



32. Moyle, V., "Nitrogenous excretion in chelonian reptiles," Biochem. J., 44, 

 581 (1949). 



32a. Needham, A. E., "Nitrogen-excretion in Carcinides maenas (Pennant) 

 during the early stages of regeneration,"/. Embrol.Exp. Morph.,3, 189(1955). 



32b. Needham, A. E., "Factors affecting nitrogen-excretion in Carcinides 

 maenas;' Physiol. Comp., 4, 209 (1957). 



33. Needham, J., Chemical Embryology, Vol. 2 (Cambridge Univ. Press, 1931). 



34. Nizet, E. and Wilsens, L., "Quelques aspects de 1'anatomie du rein de 

 Lophius piscatorius L.," Pubbl. Staz. Zool. Napoli, 26, 36 (1955). 



35. Norris, E. R. and Benoit, G. J. Jn., "Studies on trimethylamine oxide. 1. 



