§4.4 REFERENCES 163 



activities of these hormones are morphogenetic (§ 4.232). 

 Progesterone, in the course of preparing the uterus for the 

 implantation of the embryo, causes growth of the uterine glands to 

 the stage when secretion from them becomes possible ; it may be 

 that it does not actually stimulate the release of their secretion in 

 the strict kinetic sense. The kinetic actions of oestrone and testos- 

 terone on somatic muscles may also be considered as incidental; 

 they cannot in any case be claimed as the sole actions of these 

 hormones. The last gonadial hormone in this group occurs in 

 Gastropoda and controls the secretion of mucus from the oviduct 

 as well as having far-reaching morphogenetic effects; it is, there- 

 fore, similar in function to progesterone, but nothing is known of 

 the means whereby the secretion of the hormone is controlled. 



4.4 References 



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Arvy, L. and Gabe, M. (1954). Donnees histophysiologiques sur la 

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AsTwooD, E. B. (1955). Growth hormone and corticotropin. In The 

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Bacq, Z. M., Fisher, P. and Ghiretti, F. (1952). Action de la 5-Hy- 

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Barker, S. B. (1955). Thyroid. Ann. Rev. Physiol. 17: 417-442. 



Bastian, J. W. and Zarrow, M. X. (1954). Stimulation of the secretory 

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 ology, 54: 116-117. 



Bates, R. W. and Cornfield, J., etc. (1957). An improved assay method 

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Bayliss, W. M. and Starling, E. H. (1902). The mechanism of pan- 

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Bidder, A. M. (1950). The digestive mechanism of the European squids, 

 Loligo vidgaris, Loligo forbesii, Alloteuthis media and Alloteuthis 

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BoGDANOVE, E. M. (1957). Selectivity of the effects of hypothalamic 

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