18 



UrM.VN M.\OM.V Rl'TICrLf; I\ XORM.VT. .VXD r.\TIIOI,OGIC.\L DKVKT.OPMKXT. 



whether or not it is encircled bj' the amnion. In these specimens the ccelom is 

 usually oularoed and sometimes it is greatly distended. Often there is a small gran- 

 ular jirecipitate in older specimens, but this is not of sufficient quantity or density 

 to form a continuous mass. The histories of these specimens show that they are 

 considerably older than their sizes indicate, and I am inclined to view them as 

 having once had a dense mass of magma within the ccelom, which subsequently 

 underwent dissolution, leaving a more or less flaky deposit that finally disajipeared 

 altogether. 



In the third group, the ccelom is greatly distended, the amnion is usuall,v absent , 

 and the ovum is filU^d with a gelatinous substance. This is well illustrated by speci- 

 men No. 604, plate 1. figures 1 and 2. 



I will now review several specimens illustrating these three varieties of patho- 

 logical magma. The specimens considered are arranged in table 2. The list could 

 easily be increased to several hundred, but as the specimens with catalogue numl)ers 

 less than 403 have been published in detail with illustrations in my monograi)h on 

 monsters, I will allude only to some of them. The pathological specimens with 

 numbers over 402 are lieing prei)ared for publication, so that a few selected speci- 

 mens with higher numbers are illustrated. Pathological specimens from tubal preg- 

 nancj' with numbers up to 1.000 will he found described in detail in my monograph 

 on tubal ])regnancy. 



The first specimen which I shall consider i,Xo. 278) consists of an entire ovum, 

 measuring 6 bj^ 4 mm. It was sent me by Dr. Stanton, of Albany, New York. 

 The specimen might be viewed as normal, but it contains no embryo, and as it was 

 obtained from a diseased uterus, it is probably pathological, the magma having 

 undergone minor changes. 



This ovum was found accidentally in curettings from a woman supposed to have 

 chronic endometritis following pregnancy. There is nothing in the history from 

 which the age of the specimen could be estimated. Part of the specimen had l)een 



