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Cheld, C, 1920. Studies on the dynamics of morphogenesis and inheritance 

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Collier, W. A., 1920. Ein neues Verfahren zur Feststellung- der Verwandt- 

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Cramptoii, (J. ('., 1919. The evolution of arthropods and their relatives, 

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Dawson, J., 1919. An experimental study of an amicronucleate Oxystricha. 

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Dehonie, L., 1919. Hermaphroditisme et scissiparite. C. C4. Acad. Sc. Paris. 

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DeiiioU, R., 1920. Zur Frage nach der Vererbung vom Soma erworbener 

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Doiicaster, L., 1920. The tortoiseshell Tomcat — a suggestion. Journ. Genet. 

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Duorden, J., Methods of Degeneration in the Ostrich. Journ. Genet. 0. 

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Uoldschiuidt, R., 1917. Intersexuality and the endocrine aspect of sex. 

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(iriiinell, J., 1919. The english sparrow has arrived in deathvalley: an experi- 

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(iruyer, M. F. and Smith. E. A , 1920. Transmission of eye-defects induced 

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Hamniarsteu, 0. D., 1918. Beitrag zur Embryonalentwicklung der Malacob- 

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Haiiström, B., 1919. Zui' Kenntnis des zentralen Nervensystems der Arach- 

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Harrison, J., 1919. A preliminary study of the effects of Ethyl alcohol to 

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Huntington, U. S., 1920. A critique of the theories of pulmonary evolution 

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Keller, C, 1919. Die Stammesgeschichte unserer Haustiere. (Aus Nat, u. 

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Kupfer, M., 1920. Beiträge zur Morphologie der vveiblichen Geschlechts- 

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Leigh-Sharpe, W. H., 1920. The comparative morphology of the secondary 

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Loeb, L., 1920. On the reaction of tissues to synogenesio-, homoio- and 

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