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58. Das, S. M., Biol. Bull. 95:307-319 (1948). Excretion in Molgula. 



59. Dekhuyzen, M. C, Arch. Neerl. Physiol. 5:563-571 (1921). Osmotic relations 

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60. Dethier, v., and Chadwick, L., Physiol. Rev. 28:220-254 (1948). Chemo- 

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61. Dill, D. B., Life, Heat and Altitude (1938). Harvard Univ. Press, 211 p. 



62. Duval, M., Ann. de I'lnst. Oceanogr. Monaco N. S. 2:1-231 (1925). Relation 

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63. Duval, M., and Prenant, M., C. R. Acad. Sci. 182:96-98 (1926). Osmotic 

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64. Edmonds, E., Proc. Linn. Soc. New So. Wales 60:233-247 (1935). Relation 

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65. Eisenberg, E., Arch. Biol. 35:441-464 (1925). Function of contractile vacuole 

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71. Fox, D. L., Biol. Bull. 80: 111-129 (1941). Tissue chloride in Mytilus. 



72. Fraenkel, G., and Blewett, M., Bull. Ent. Res. 35: 127-139 (1944). Effect 

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76. Frisch, J. A., Arch. Protist. 90: 123-161 (1937). Functioning of contractile 

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77. Frisch, J. A., Arch. Protist. 93:38-71 (1939). Experimental adaption of Para- 

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78. Frisch, J. A., Anat. Rec. 89:571 (1944). Vacuolar rates in several species of 

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80. Gamble, J. L., Proc. Aw. P^iZ. Soc. 88:151-158(1944). Minimum water require- 

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81. Garrey, W. E., Biol. Bull. 8:257-270 (1905). Osmotic concentration of blood 

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82. Gause, G. F., ;. Exper. Zool. 87:85-100 (1941). Natural selection in acclima- 

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83. Gaw, H. Z., Arch. Protist. 87:185-193 (1936). Effect of medium upon con- 

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84. Gelei, J. voN, Arch. Protist. 64:479-494 (1928). Secretory granules and con- 

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85. Gelfan, S., Protoplasnia 4: 192-200 (1928). Conductivity of protozoan cytoplasm. 



86. Grafflin, a., Am. ]. Physiol. 97:602-610 (1931). Urine flow in marine fish. 



87. Grafflin, A., /. Cell. & Comp. Physiol. 9:469-475 (1937). Structure of kidney 

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