«82 



SPERM, OVA, AND PREGNANCY 



WiLLETT, E. L., BUCKNER, P. J., AND LaRSON, G. L. 



1953. Three successful transplantations of fer- 

 tilized bovine eggs. J. Dairy Sc, 36, 520-523. 



WiLLETT, E. L., Black, W. G., Casida, L. E., 

 Stone, W. H., and Buckner, P. J. 1951. Suc- 

 cessful transplantation of a fertilized bovine 

 ovum. Science, 113, 247. 



WiLLiER, B. H. 1950. Sterile gonads and the 

 problem of the origin of germ cells in the 

 chick embryo. Arch. Anat. Microscop., 39, 269- 

 273. 



Wilson, E. B. 1925. The Cell in Development 

 and Heredity. New York: Macmillan Com- 

 pany. 



WiMSATT, W. A. 1944. Further studies on the 

 survival of spermatozoa in the female repro- 

 ductive tract of the bat. Anat. Rec, 88, 193- 

 204. 



WiMSATT, W. A., AND Waldo, C. M. 1945. The 

 normal occurrence of a peritoneal opening in 

 the bursa ovarii of the mouse. Anat. Rec. 93, 

 47-57. 



Winberg, H. 1941. Physiologic behavior of bird 

 sperm at varying temperatures. Arch. Zool., 

 33, 1-12. 



Winters, L. M., Green, W. W., and Comstock, 

 R. E. 1942. Prenatal development of the 

 bovine. Minnesota Agric. Exper. Sta., Tech. 

 Bull. 151. 



Wischnitzer, S. 1957. A study of the lateral 

 loop chromosomes of amphibian oocytes by 

 phase contrast microscopy. Am. J. Anat., 101, 

 135-167. 



Wischnitzer, S. 1958. An electron microscope 

 study of the nuclear envelope of amphibian 

 oocytes. J. Ultrastruct. Res., 1, 201-222. 



WisLocKi, G. B., Bunting, H., and Dempsey, E. W. 

 1947. Metachromasia in mammalian tissues 

 and its relationship to mucopolysaccharides. 

 Am. J. Anat., 81, 1-37. 



WisLOCKi, G. B., AND Dempsey, E. W. 1945. 

 Histochemical reactions of the endometrium 

 in pregnancy. Am. J. Anat., 77, 365-403. 



Wl.SLOCKI, G. B., AND GUTTM.\CHER, A. F. 1924. 



Spontaneous peristalsis of the excised whole 

 uterus and fallopian tubes of the sow with 

 reference to the ovulation cycle. Bull. Johns 

 Hopkins Hosp., 35, 246-252. 



WiSLOCKi, G. B., AND Snyder, F. F. 1933. The 

 experimental acceleration of the rate of trans- 

 port of ova through the Fallopian tube. Bull. 

 Johns Hopkins Hosp., 52, 379-386. 



WisLOCKi, G. B., .\ND Streeter, G. L. 1938. On 



the placentation of the macaque (Macaco mu- 

 latta), from the time of implantation until the 

 formation of the definitive placenta. Contr. 

 EmbryoL, Carnegie Inst. Washington, 27, 1-66. 



WiTscHi, E. 1948. Migration of the germ cells of 

 human embryos from the yolk sac to the 

 primitive gonadal folds. Contr. EmbryoL, Car- 

 negie Inst. Washington, 32, 67-80. 



WiTSCHi, E. 1952. Overripeness of the egg as a 

 cause of twinning and teratogenesis : a review. 

 Cancer Res., 12, 763-786. 



Wrba, H. 1956. Behavior of the fertilised rat egg 

 in vitro. Naturwissenschaften, 43, 334. 



Wright, P. L. 1948. Preimplantation stages in 

 the long-tailed weasel {Mustela frenata). 

 Anat. Rec, 100, 593-607. 



Y.AMAD.A, F. 1952. Studies on the ciliary move- 

 ments of the oviduct. Japan. J. Physiol., 2, 

 194-197. 



Yamada, E., Muta, T., Motomura, A., and Koga, H. 

 1957. The fine structure of the oocyte in the 

 mouse ovary studied with electron microscope. 

 Kurume m". J., 4, 148-171. 



Ya.m.we, J. 1930. The proteolytic action of mam- 

 malian spermatozoa and its bearing upon the 

 second maturation division of ova. Cvtologia, 

 1, 394-403. 



Yamane, J. 1935. Kausal-analytische Studien 

 liber die Befruchtung des Kanincheneies. I. 

 Die Dispersion der Follikezellen und die Ab- 

 losung der Zellen der Corona radiata des Eies 

 durch Spermatozoen. Cytologia, 6, 233-255. 



Zlotnik, I. 1948. A comparative study of the 

 cytoplasmic components during the oogenesis 

 of dog, cat, and rabbit. Proc. Roy. Soc. Edin- 

 burgh, ser. B, 63, 200-212. 



Zollinger, H. U. 1948. Cytologic studies with 

 the phase microscope. I. The formation of 

 "blisters" on cells in suspension (potocytosis), 

 with observations on the nature of the cellular 

 membrane. Am. J. Path., 24, 545-567. 



ZoTiN, A. I. 1958. The mechanism of hardening 

 of the salmonid egg membrane after fertiliza- 

 tion or spontaneous activation. J. EmbryoL & 

 Exper. MorphoL, 6, 546-568. 



ZucKERMAN, S. 1951. The number of oocytes in 

 the mature ovary. Recent Progr. Hormone Res., 

 6, 63-109. 



ZuCKERMAN, S., AND P.ARKES, A. S. 1932. The 



menstrual cycle of the primates. II. The cycle 

 of the baboon. Proc. Zool. Soc. London, Pt. 1. 

 139-191. 



