GROWTH AND STRUCTURE OF HYPOPHYSIS IN RAT 357 



15. The changes described m the hypophysis during hiberna- 

 tion are probably inanition effects. The rapid growth of the 

 body following periods of inanition may be due to the embryonic 

 condition to which the cells are reduced; but there is no evidence 

 that such growth is due to any specific histological cha.nges in 

 the hypophysis or other ductless glands. 



LITERATURE CITED 



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BiEDL, A. 1913 Inncre Sckrction. 2. Aufl., 2. Theil. (fig. 7.) 



CusHiNG, H. AND GoETSCH, E. 1915 Hibernation and the pituitary body. 

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Donaldson, H. 1915 The Rat. Reference tables and data. Memoirs of The 

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Gemelli, a. 1906 Su I'ipofisi delle marmotte durante il letargo e nella stagione 

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Herring, P. T. 1908 The histological appearances of the mammalian pituitary 

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HosKiNS, E. R. 1916 The growth of the body and organs of the albino rat as 

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Jackson, C. M. 1915 a Effects of acute and chronic inanition upon the rela- 

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1915 b Changes in the relative weights of the various parts, systems 

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1916 Effects of inanition upon the structure of the thyroid and para- 

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Mann, F. C 1916 The ductless glands and hibernation. Am. Jour. Physiol., 

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