350 C. M. JACKSON 



amount, but is occasionally increased in volume by infiltration 

 of ground substance. 



Variations also occur normally in the structure of the para- 

 thyroid (though less marked than in the thyroid), so that here 

 likewise caution must be observed in drawing conclusions as to 

 effects of experiments. The 'oxyphile' type of cell does not ap- 

 pear to be a normal constituent of the parathyroid gland in the 

 rat. However, some of the degenerated cells resemble in many 

 respects the usual description of this 'oxyphile' type, which 

 therefore may possibly represent an atrophic rather than a func- 

 tional condition. 



LITERATURE CITED 



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 med., Bologna, Anno 73, Serie 8, vol. 2, pp. 223-231. 



BiEDL, A. 1913 Innere Secretion. 2 Aufl. I. Theil. 



Bozzi, E. 1895 Untersuchungen liber die Schilddriise. Ziegler's Beitrage. 

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Elkes, Chonel 1903 Der Bau der Schilddriise mn die Zeit der Geburt. Dis- 

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Erdheim, J. 1903 Zur normalen und pathologischen Histologie der Glandula 

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 Bd. 33. 



Gleim, Gustav 1912 Beitrage zur Histologie der kindlichen Schilddriise. 

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Hesselberg, Cora 1910 Die menschliche Schilddriise in der fotalen Periode 

 und in den ersten 6 Lebensmonaten. Frankf. Zeitschr. f. Path., Bd. 

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HuRTHLE, K. Beitnige zur Kenntniss des Secretionsvorgangs in der Schilddriise. 

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

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