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 Localization of peptidase in amoeba. 



70a. HoLTER, H., and Lovtrup, S., C. R. Lab. CarhbeTg 27:27-62 (1949). Pro- 

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71. HowELLS, H. H., Quart. ). Micr. Sci. 83:357-397 (1942). Digestive enzymes, 

 Aplysia. 



72. HowLAND, R. B., Protoplasma 5:127-134 (1938). Acidity of gastric vacuole, 

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73. HuMMELL, F. C, Sheperd, M. L., et al., ;. Nutrit. 25:59-70 (1943). Disap- 

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74. HuNGATE, R. E., Ann. Ent. Soc. Amer. 34:467-489 (1941). Nitrogen require- 

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75. HuNGATE, R. E., Proc. Tr. Texas Acad. Sci. 27:91-98 (1943). Termite growth 

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76. HuNGATE, R. E., Biol. Bull. 84, 157-163. (1943) Action of rumen Protozoa on 

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77. HuNGATE, R. E., Ann. Ent. Soc. Amer. 36:730-739 (1944). Cellulose fermenta- 

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78. Hykes, O., and Mazanec, J., C. R. Soc. Biol. Paris 117:166-168 (1934). Digestive 

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79. Hyman, L., The Invertebrata (1940). New York, McGraw-Hill. 726 p. Diges- 

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80. Irving, L., /. Gen. Physiol. 10:345-358 (1926). Digestive function of caeca, 

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81. IsHiDA, J., Annot. Zool. Japon. 15:285-305 (1935-1936). Digestive enzymes of 

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82. IsHiDA, J., Annot. Zool. japon. 15:263-284 (1935-1936). Digestive enzymes in 

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83. Jewell, M. E., and Lewis, H. B., ;. Biol. Cfcew. 33:161-167(1918). Lichenase 

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84. Johnson, M. J., and Berger, J., Adv. in Enzymol. 2:69-92 (1942). Properties 

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85. Johnson, M. J., Johnson, G. H., et al., /. Biol. Chem. 116:515-526 (1936). 

 Mammalian peptidases. 



86. Jordan, H., Pfliig. Arch. ges. Physiol. 116:617-624 (1907). Digestion in 

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87. Karrer, K., Schubert, P., et al., Helv. Chim. Acta 8:792-810 (1925). Cellu- 

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88. Keeton, R. W., Koch, F. C, et al., Am. ). Physiol. 51:454-468 (1920). Re- 

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89. Kei.lby,E.G., Physiol. Zool. 4:515-541(1931). Intracellular digestion of nucleo- 

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90. Kenyon, W. a.. Bull. U. S. Bur. Fish. 41, 181-200 (1925). Digestive enzymes 

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91. Kertesz, Z. I., ;. Nutrit. 20, 289-296 (1940). Fate of pectins in digestive tract, 

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92. KiRBY, H., in Calkins' Protozoa in Biological Research (1941). pp. 890-1008. 

 Role of Protozoa in animal digestive tracts. 



93. KoscHTOjANZ, C. S., IwANOFF, I., ET AL., Ztschr. vergl. Physiol. 18:112-115 

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94. KosMiN, N. P., and Komarov, P. M., Ztschr. vergl. Physiol. 17: 267-278 (1932). 

 Development of salivarv enzymes, honeybees. 



95. Krijgsman, B. J., Ztschr. vergl. Physiol. 2:264-296 (1925), ibid. 8:187-280 

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96. Krijgsman, B. J., Ztschr. vergl. Physiol. 23:663-711 (1936). Proteases of 

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97. Krogh, A., Bio/. Rev. 6:412-442(1931). Dissolved .substances as food. 



98. Kruger, p., Sitzungsh. Preuss. Akad. Wiss. phys. math. Classe 2:548-564 (1929). 

 Enzyme distribution, pH optima, various invertebrates. 



