STUNTED CYEMATA. 91 



decidua was more than twice as high as in group 5, and was divided equally between 

 the severe and the slight cases. The presence of hydatiform degeneration was 

 somewhat more common, although the percentage of these cases in which the 

 decidua was included was somewhat lower. In 90 per cent of the latter the 

 decidua was infiltrated. 



Although they frequently were not especially noted, "appendici durate" 

 seemed somewhat commoner in specimens of this than in those of the previous 

 groups. 



B. TUBAL. 



The small number of stunted tubal cyemata among the first 1,200 accessions 

 is especially interesting, because the average length of these specimens is only 

 half as great as the average length of those in the corresponding uterine group. 

 After certain specimens had been excluded only 6 stunted tubal specimens re- 

 mained. The corresponding uterine group, on the other hand, contained 61 

 specimens. But in spite- of the small number of stunted embryos in the tubal 

 group, the significance of the fact, nevertheless, is clear. It is only very rarely 

 that a tubal pregnancy lives beyond the earliest stages of development, while 

 in the uterus, on the contrary, this is relatively very common. This conclusion is 

 not based upon a comparison of the relative number of specimens found in these 

 two groups of uterine and tubal pregnancies alone, nor upon the comparative 

 size of the specimens, but upon the respective percentages that the total number 

 of specimens in the uterine and tubal groups of the stunted form among the entire 

 series of specimens in the pathologic division which were examined. Although 

 the stunted embryos form 19 per cent of the total number of uterine specimens, 

 stunted embryos form only 5.7 per cent of the total number of the tubal speci- 

 mens. This marked difference scarcely can be explained in any other way than 

 as suggested above. 



Although 11 specimens originally were placed in this group of stunted tubal 

 cyemata, 5 were found to fall elsewhere. One (No. 338c) was a uterine specimen, 

 being accompanied by considerable decidua. Two others (Nos. 196 and 934) 

 belong in group 4. The former has a length of only 3 mm., and the latter, although 

 6 mm. long, was recorded as having no extremities, and described as looking 

 like a grain of wheat. Moreover, the anatomy, especially of No. 934, is that of a 

 nodular rather than of a stunted cyema. One specimen (No. 992) belongs in 

 group 3, and another (No. 881) can not properly be classed as stunted, in view of 

 the fact that it was only 3 mm. long. 



Of the 6 remaining specimens, 5 lay in tubes the walls of which were infil- 

 trated intensely in the case of 2, and but slightly in 3 specimens. In the sixth case 

 too little of the tube was included to serve as an adequate basis for examination. 



Hydatiform degeneration undoubtedly is present in 4 of these 6 cases, or in 

 66.6 per cent. In another specimen (No. 477) some villi seem to show incipient 

 changes indicative of hydatiform degeneration, but since marked maceration 

 changes also are present, one can not be certain of this case. Too few villi were 



