356 STUDIES ON PATHOLOGIC OVA. 



TABLE 21 Abortions grouped according to the number of children, race, and the nature of the conceptus. 



(Total number of cases, 593.) 



TABLE 22. Abortions grouped according to the age of the mother, race, and the nature of the conceptus. 



(Total number of cases, 607.) 



TABLE 23. Total number of cases (697), grouped according to the causes of abortion. 



TABLE 24. Causes of abortion (252 cases). 



The cause was unrecorded in 76.6 per cent of 264 pathologic and in 63.3 per cent of 344 normal cases out of a total of 608. 



