AGE OF HUMAN EMBRYOS 405 



after the period on December 15. Due to a surgical operation on Janu- 

 ary 24 there was continuous hemorrhage until January 3 when the 

 ovum was passed. In the event that conception took place after the 

 last period, this specimen could not be more than 46 days old. Men- 

 strual age, 65 days; copulation age, 46 days. 



No. 1390 



Dr. G. N. J. Sommer, Trenton, N. J.) 



Embryo CR 18 mm. 



Last period, December 18 to 22. Operation for tuba^ pregnancy, 

 February 10. Conception took place on December 25, as the woman 

 was in the habit of using preventive means and same were not used on 

 Christmas eve. Menstrual age, 54 days; copulation age, 47 days. 

 Reliable case. 



No. 1584 



(Dr. F. H. Church, Bonnville, N. Y.) 



Embryo, CR 18 mm. Chorion 35 x 31 x 25 mm. 



Unmarried woman, age 21, first pregnancy. Last period August 

 15; menstruation regular, every 28 days. Criminal abortion, October 

 10. Coitus, September 13 and 14. Menstrual age, 56 days; copulation 

 age, 26 and 27 days. Not Reliable. 



No. 26. 



(Dr. C. E. Simon, Baltimore.) 



Fetus, CR 25 mm., CH 30 mm. This specimen, which was some- 

 what injured and therefore difficult to measure with precision, was 

 brought to me by Dr. Simon, February 25 (?) 1894 with the following 

 history. The mother, an unmarried woman 27 years old, was a serv- 

 ant in Dr. Simon's family, and had but recently come from Germany. 

 She remained at home continually until New Year's eve, when she went 

 to a ball and remained out all night. Her last 'period took place on 

 December 12 and lasted six days. During the night of December 31 

 she was with her lover and the abortion followed on February 25. 

 On January 16, after missing her January period, she took a cupful of 

 mustard powder with the hope that it would produce abortion, but 

 instead it yearly killed her. On January 21, she recovered, and re- 

 sumed her household duties. (See record of the case by Simon, N. Y. 

 Med. Jour., March 17, 1894.) Later she fell into the hands of an 

 abortionist and the embryo came away during the night of February 24. 

 Dr. Simon assured me al: the time of the abortion that it was absolutely 

 impossible for the pregnancy to have taken place at any time excepting 

 the night of December 31. 



Menstrual age, 75 days; copulation age, 56 days. Reliable case. 



