ON THE FATE OF THE HUMAN EMBRYO IN TUBAL PREGNANCY. 



01 



from the one published in my article on monsters. That table rests upon all avail- 

 able statistics, most of which were obtained from Von Winckel. In it the patho- 

 logical ova were put together, but according to my records of pathological specimens 

 obtained from the uterus, there are 100 ova containing pathological embryos to 

 every 63 without embryos. So, breaking up the probable number (7,048 pathologi- 

 cal ova to every 100,000 pregnancies) according to this proportion, we have two 

 numbers (4,330 and 2,718) given under this heading in table 9. 



TABLE 9. Fate of 100,000 uterine pregnancies. 



For the sake of comparison it is best to reduce all these figures to a percentage. 

 In each 100 uterine pregnancies 4.3 per cent contain pathological embryos and 2.7 

 per cent contain pathological ova or rather ova, without embryos. 



Drawing upon the general table given in the beginning of this article that is, 

 using only those specimens which came to the laboratory unexamined we can 

 build up a similar table, but here instead of 100,000 cases to deal with we have only 

 80. All the tubal pregnancies in the collection could not possibly be used in drawing 

 up this group of statistics, so I arranged the whole material into two groups with 

 three subdivisions in each group. The first, called "examined," consists of speci- 

 mens examined by physicians before the specimens were sent to the laboratory. 

 The second group includes specimens not examined by the physician but sent to the 

 laboratory for me to examine; this group is called "unexamined." It is seen at a 



TABLE 10. Distribution of tubal pregnancies in first and second halves of about 1,000 embryologies I specimens collected. 



glance that the specimens numbered less than 500 arrange themselves very differ- 

 ently from those numbered over 500. There are about 1,000 specimens in the col- 

 lection and table 10 shows the distribution of tubal pregnancy among the first 500 

 and the second 500 specimens. It is seen that tubal pregnancies in the second 

 500 fall off markedly in normal embryos and increase greatly in pathological ova. 

 The unexamined 80 specimens arrange themselves in a table in which the birth 

 column is zero. 16 per cent of the specimens of tubal pregnancy contain normal 

 embryos, 25 per cent pathological embryos, and 59 per cent pathological ova. 



