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75. Kramer, B., and Tisdall, F. F., /. Biol. Chem. 47:475-481 (1921). Electrolytes 

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76. Krey, J., Zool. Jahrh., Abt. allg. Zool. u. Physiol. 58:201-224 (1937). Insect 

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77. Krogh, a., Skand. Arch. Physiol. 80:214-222 (1938). Chloride in molluscan 

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78. Krogh, A., Osmotic Regulation in Aquatic Animals (1939). Cambridge Univ. 

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79. Krogh, A., Proc. Roy. Soc. Lond., B. 133:140-200 (1946). Permeability and 

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80. Kyer, L., Biol. Bull. 82:68-78 (1942). Effect of sinus gland on gastroliths of 

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81. LiENEMANN, L. J., /. Cell. & Cotnp. Physiol. 11:149-159 (1938). Kidneys in 

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82. Macallum, a. B., /. Physiol. 29:213-241 (1903). Inorganic composition of 

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83. Macallum, A. B., Proc. Roy. Soc. Lond., B. 82:602-624 (1910). Inorganic 

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84. Macallum, A. B., Physiol. Rev. 6:316-357 (1926). Paleochemistry of body 

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85. Manery, J. F., /. Cell. & Comr- Physiol. 14:365-369 (1939). Electrolytes in 

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86. Marine Biol. Lab. Formulae and Methods (1936). Ed., O. Richards. Elasmobranch 

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87. Marshall, E. K., and Grafflin, A. L., Bull. Johns Hopkins Hosp. 43:205-235 

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88. Mast, S. O., and Pace, D. M., ]. Cell. & Cornp. Physiol. 20: 1-9 (1942). 

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89. McCance, R. a., and Shackleton, L. R. B., /. Mar. Biol. Ass. U. K. 22:269-272 

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90. Motley, H. L., Physiol. Zool. 8:62-84 (1934). Physiological saline for mussels. 



91. Nagel, H., Ztschr. vergl. Physiol. 21:468-491 (1934). Ionic balance, Carcinus. 



92. Needham, J., Biol. Rev. 13:225-251 (1937). Osmotic properties of embryos in 

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93. Needham, J., Biochemistry and Morphogenesis (1942). Cambridge Univ. Press. 

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94. Needham, J. C, et. al.. Culture Methods for Inv.ertebrate Animals (1937). 

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95. Pag^, I. H., Biol. Bull. 52:168-172(1927). Electrolytes in echinoderm eggs. 



96. Pantin, C. F. A., ;. Exper. BioL 11:11-27(1934). Saline for Carcinus. 



97. Phillips, A. H., Am. ). Sci. IV, 46:473-475 (1918). Va in a holothurian. 



98. Pitts, R. F., ]. Cell. & Comp. Physiol. 4:389-395 (1934). Urinary chloride, 

 marine teleosts. 



99. Pringle, J. W. S., ;. Exper. Biol. 15:144-151 (1938). Physiological sahne for 

 insects. 



100. Prosser, C. L., and Zimmerman, G. L., Physiol. Zool. 16:77-83 (1943). Physi- 

 ological saline for earthworms. 



101. Robertson, J. D., /. Exper. Biol. 13:279-297 (1936). Calciferous glands of 

 earthworms. 



102. Robertson, J. D., /. Exper. Biol. 16:387-397 (1939). Ionic composition of 

 bloods of Homarus, Cancer, and Echinus. 



103. Robertson, J. D., Biol. Rev. 16:106-133 (1941). Ca in invertebrates. 



103a. Robertson, J. D., /. Exper. Biol. 26:182-200 (1949). Ionic regulation in some 

 marine invertebrates. 



104. Robertson, J. D., and Webb, D. A., /. Exper. Biol. 16:155-177 (1939). Min- 

 erals in marine animals and in sea water. 



105. Rushton, W. a. H., Proc. Roy. Soc. Lond., B. 132:423-437 (1945). Physi- 

 ological saline for earthworms. 



106. Schlatter, M. L., /. Cell. & Comp. Physiol. 17:259-261 (1941). Electrolytes 

 in blood of crustaceans. 



