THE EMBRYOLOGY OF THE OPOSSUM 217 



HARTMAN, CARL G. 1924 Observations on the motility of the opossum genital 

 tract and the vaginal plug. Anat. Rec., vol. 27, pp. 293-303. 



1924 Observations on the viability of the mammalian ovum. Am. 



J. Obst. and Gyn., vol. 7, pp. 1-4. 



1924 Vitamin-A and exercise in relation to follicular atresia in 

 the opossum. Am. J. Physiol., vol. 68, pp. 97-101. 



1925 Interruption of pregnancy by ovariectomy in the aplacental 



opossum. Am. J. Physiol., vol. 71, pp. 436454. 



1925 Observations on the functional compensatory hypertrophy of 

 the opossum ovary. Am. J. Anat., vol. 35, pp. 1-24. 



1925 Hysterectomy and the oestrous cycle in the opossum. Am. 



J. Anat., vol. 35, pp. 25-29. 



1926 Polynuclear ova and polyovular follicles in the opossum and 



other mammals, with special reference to the problem of fecundity. 

 Am. J. Anat., vol. 37, pp. 1-51. 



1927 Observations on the ovary of the opossum (Didelphis vir- 



giniana). Carnegie Inst. Wash., Contributions to Embry., vol. 18, 

 pp. 285-300. 



1928 The breeding season of the opossum (Didelphis virginiana) 



and the rate of intra-uterine and postnatal development. J. Morph. 

 and Physiol., vol. 46, pp. 143-215. 



1929 How large is" the mammalian egg? Quart. Rev. Biol., vol. 4, 



pp. 373-388. 



1929 Some excessively large litters of eggs liberated at a single 



ovulation in mammals. J. Mammal., vol. 10, pp. 197-202. 



HARTMAN, CARL G., AND ROBERT KENDALL ENDERS 1934 Response of the 



opossum ovary to urine of pregnancy (follutein Squibb). Anat. Rec., 



vol. 58 (Suppl.), p. 68. 

 HARTMAN, CARL G., C. DUPRE AND E. ALLEN 1926 The effect of follicular and 



placental hormones upon the mammary glands and genital tract of the 



opossum. Endocrinology, vol. 10, pp. 291-300. 

 HARTMAN, CARL G., AND BESSIE LEAGUE 1925 Anovular graafian follicles in 



mammalian ovaries. Anat. Rec., vol. 30, pp. 1-13. 



1925 Description of a sex intergrade opossum, with an analysis of 



the constituents of its gonads. Anat. Rec., vol. 29, pp. 283-297. 



HABTMANN-WEINBERG, A. 1924 Interpleuraloffnung und Luftsacke bei Mar- 



supialiern. C. R. Acad. Sci. Russie, Ap. 26-29. 

 HEDIGER, H. 1934 Uber einen Fall vom Zahmheit bei Didelphys. Zool. Garten, 



n.F., vol. 7, pp. 28-44. 

 HEONER, R., AND H. RATCLIFFE 1927 Trichomonads from cat, man, and from 



intestine of monkey, opossum, and prairie dog. J. Parasitology, vol. 14, 



pp. 27-35. 

 HERRICK, C. JUDSON 1924 The nucleus olfactorius anterior of the opossum. J. 



Comp. Neur., vol. 37, pp. 317-359. 

 HERRICK, CLARENCE LUBNER 1892 The cerebrum and olfactories of the opossum, 



Didelphys virginiana. J. Comp. Neur., vol. 2, pp. 1-20. 

 HEUSER, CHESTER HENRY 1919 The anatomy of the 7-mm. opossum embryo. 



Anat. Rec. (abst.), vol. 16, p. 150. 



