356 CHESTER H. HEUSER 



LITERATURE CITED 



Bensley, R. R. 1902. The cardiac glands of mammals. Am. Jour. Anat., vol. 



2, pp. 105-156. 

 Hartman, C. G. 1919 Studies in the development of the opossum (Didelphys 



virginiana L.). III. Description of new material on maturation, 



cleavage, and entoderm formation. IV. The bilaminar blastocyst. 



Jour. Morph., vol. 32, pp. 1-142. 

 Heuser, C. H. 1914 The form of the stomach in mammalian embryos. Proc. 



Am. Assoc, of Anatomists. Anat. Rec, vol. 8, p. 130. 



1919 The anatomy of the 7-mm. opossum embryo. Proc. Am. Assoc. 



of Anatomists. Anat. Rec, vol. 16, p. 150. 

 JoHNSox, F. P. 1910 The development of the mucous membrane of the oesoph- 

 agus, stomach and small intestine in the human embryo. Am. Jour. 



Anat., vol. 10, pp. 521-575. 

 Lewis, F. T. 1912 The form of the stomach in human embryos, with notes 



upon the nomenclature of the stomach. Am. Jour. Anat., vol. 13, pp. 



477-503. 



1915 The comparative embryology of the mammalian stomach. 



Proc. Am. Assoc, of Anatomists. Anat. Rec, vol. 9, pp. 102-103. 

 Lewis, F. T., and Thyng, F. W. 1908 The regular occurrence of intestinal 



diverticula in embryos of the pig, rabbit and man. Am. Jour. Anat., 



vol. 7, pp. 505-519. 

 Mall, F. P. 1898 Development of the human intestine and its position in the 



adult. Bull, of the Johns Hopkins Hospital, vol. 9, pp. 197-208. 

 MiKOT, C. S. 1900 On a hitherto unrecognized form of blood circulation with- 

 out capillaries in the organs of vertebrata. Proc. of the Boston Society 



of Natural History, vol. 29, pp. 185-215. 

 Owen, R. 1868 On the anatomy of vertebrates, vol. 3. London. 

 Slenka, E. 1887 Studien iiber Entwickelungsgeschichte der Thiere, viertes 



Heft, Das Opossum (Didelphys virginiana). Wiesbaden. 



