246 FRANKLIN PARADISE JOHNSON 



of the rhythmical movements of the intestine, the vilU change 

 their shape, and in this way bring about a more thorough mix- 

 ing of the intestinal contents. Moreover, by the unfolding 

 of the intestinal glands, a greater amount of epithelium is ex- 

 posed to the intestinal content, and thus the absorption sur- 

 face is increased. Because of the variety of shapes presented 

 by the gland cavities it is not possible, by ordinary methods, 

 to determine their exact capacities, but it is probable, that the 

 capacities of the glands are decreased upon strong distention, 

 and their contents are then partially emptied into the lumen 

 of the intestine. 



BIBLIOGRAPHY 



Brucke, E. 1850 Ueber den Bau und die physiologische Bedeutung der Peyeri- 

 schen Driisen. Denkschr. d. Akad. zu Wien, Bd. 2, pp. 21-26. 



BujARD, E. 1909 Etude des types appendiciels de la inuqueuse intestinale, en 

 rapport avec des regimes alimentaires. Inter. Monatschr. f . Anat. u. 

 Phys., Bd. 26, pp. 1-96. 



Gruby, and Delapond, O. 1843 Resultats des recherches faites sur I'ana- 

 tomie et les fonctions des villosites intestinales, I'absorption, la pre- 

 paration et la composition organique du chyle dans les animaux. Comp. 

 rendus, Acad. Sci. Paris, tom. 16, pp. 1194-1197. 



Harvey, R. W. 1908 Variations in the wall of the large intestine and in the 

 number and staining properties of goblet cells. Anat. Rec, vol. 2, 

 pp. 129-142. 



1909 Variations with distention in the wall and epithelium of the 

 bladder and ureter. Anat. Rec, vol. 3, pp. 296-307. 



Heit?mann, C. 1868 Zur Kenntniss der Dtindarmzotten. Sitz. d. k. Akad- 

 Wien, Bd. 58, Abth. 2, S. 253-268. 



1883 Microscopical morphology of the human body. New York. 



Kollikek, a. 1851 Ueber das Vorkommen von glatten Muskelfasern in Schleim- 

 hauten. Zeitschr. f. Zool., Bd. 3, pp. 106-107. 



Latjcachie, a. 1843 M6moire sur la structure et le mode d'action des villo- 

 sites intestinales. Comp. rendus, Acad. Sci. Paris, tom. 16, pp. 1125- 



1127. 



Mall, F. P. 1896 A study of intestinal contraction. Johns Hopkins Hospital 

 Reports, vol. 1, pp. 37-75. 



Verson, E. 1871 Diinndarm, in Strieker's Handbuch der Lehre von den Gewe- 

 ben. Leipzig. 



