Opossum ie 
Hartman, C, G. 1925. The interruption of pregnancy by ovariectomy 
in the aplacental opossum: A study in. the physiology of Kirt ape ck 
~ tation. Am, Jour. Physiol, 71:436-54, ‘Illus. 
Fartman, C. G. 1926. Polynuclear | ova and” polyovular- pilates in 
the opossum and other mammals with special reference to the 
‘problem qf fecundity. Am. Jour. Anat. 37:1-51. Tllus. 
é oye ota "Geen bee hs Observations on the ovary of the opossum 
(Didelphis virginiana). Carnegie, Inst. Wash, Pub. “Ss hs 285-500. 
Hartman, C. G. 1928. The breeding, season of the opossum (Didelphis 
virginiana) and the rate of intra-uterine’ and postnatal develop- 
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‘Hartman, €C..G. 1950. The pyar of the baby opossunf, Nat. Mag. 
16(2):95-6. Also: 4930, Am. Fur Breed. 3(4):4-8.. Illus. 
Hartman; ©. G., C. Dupre and E. Allen. 1926. ° The effect of fol- 
licular’ and olacental hormones upon the mamnary glands and 
genital tract of the opossum. Endocrin. 10: e9l- 2002S 
Hartman, C. G.5. and R. Kk. Enders. 1954.. Response ‘2: the. opossum 
ovary to urine of pregnancy (follutein Squibb). Anat. Rec. 58 
(Suppl. ):68, i don i 
Hartman, C. G.; and B. League. 1924. The gonads of a sex-intergrade 
opossum. _Anat. Rec. 29:114. 
lartman, C. G., and B, League... 1925...Description of a sex-inter- 
grade .,opossum with an analysis of the constituents of its gonads. 
Anat. Rec. 29:283-97. Illus. 
Hayes, J. de 1959. How about these quints? Nat. Notes 6(10):201-2, 
Hegner, R., and li. Ratcliffe. 1927. Trichomonads from: cat, man, 
and from intestine of monkey, opossum and prairie dog.. Jour, 
Parasitol, 14:27-355, 
Herrick, C. L. 1892. The cérebrum and olfactories of the opossum, 
Didelphys virginiana.* Jour, Compar, ,Neur. 2:1-20, citings § 
Herrick, C. J. 1924. The nucleus olfactorius anterior of the opos- 
sum. Jour. Compar. Neur. 37:317~59, Illus... 
Eeuser, C. H, 1919. The anatomy of the 7-mn. opossum embryo. Anat, 
Rec. 16:150. (Abst.) aes, 
Heuser, C. H. 1921. The carly establishment of the intestinal 
nutrition in the dpossum. The digestive ‘system just before and 
soon after birth. Am, Jour. Anat. 28:341- 69, 
‘Heuser, ©. E., and C. G. Hartman. 1928, Some ‘old and forgotten 
observations upon the brecding habits of the opossum. Jour. 
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