No. 5-] SOME INTERESTING EGG MONSTROSITIES. 227 



the embryo was developed at least as far in this perfectly fresh 

 egg as would under ordinary circumstances occur on the fourth 

 day of incubation." 



One of the most recent cases of egg monstrosity came into 

 my hands within a few months, and is in some respects wholly 

 unlike any of the others. It consisted of two eggs, as shown 

 in Fig. 2, partly independent, but united by a narrow connect- 

 ive {c), in the figure. They differed in size about as indicated, 

 and presented the smaller ends toward each other — a fact in 

 itself somewhat abnormal, as will be shown later. These eggs 

 were devoid of hardened shells, but the larger had considerable 

 deposition of calcareous matter over the entire membrane. 



This was almost wholly lacking in the smaller. Upon opening 

 the eggs, both were found to contain normal yolks of normal 

 size, and each with distinct germinal areas. The interior of 

 the yolks was of characteristic and normal composition. The 

 different sizes of the eggs were due to the fact that while the 

 larger had its usual amount of albuminous deposit, the smaller 

 was almost wholly devoid of this. But while differing in the 

 amounts of albumen it was in each of the same character, 

 including the chalazal portion, which at the smaller ends com- 

 municated through the hollow connective, as shown in the sec- 

 tional view of Fig. 2. The sizes of the eggs were as follows : 



Total length of the two, 1 13 mm. ; length of large Q^g, 55 mm. ; 

 length of smaller, 52 mm.; length of connective, 16 mm.; short 

 diameter of larger, 40 mm.; short diameter of smaller, 23 mm.; 

 short diameter of connective, 8 mm. 



Concerning the origin of these abnormal eggs the views 

 expressed by Schumacher are quite similar in most respects 

 to those expressed in my original report. There seems little 

 doubt that they have been produced by an unusual retention 



