SEX STUDIES VII. CYSTIC DEGENERATION OF THE OVARIES. 6y 



TABLE 2. 

 Lactation. Record of Dorothy of Orono. 



Lactation Periods. 



Days 



in 

 milk. 



Pound.s Pounds 



of I of 



milk. I fat. 



Remarks 



Sept. 21, 1909-Aug. 4, 

 1910 



Sept. 11, 1910-Nov. 25, 

 1911 



Feb. 26, 1912-March 24, 

 1913 



316! 7,840.6 

 440 12,426.4 



7,016.8 



293.62 

 450.75 



253.92 



Lactation in which Advanced Reg- 

 istry record was made. 



Cow was sick for sometime during 

 this period. 



Alt this, point begins the interesiting part of tlie histor3\ 

 After March 24, 191 3, the cow never gave any milk. The udder 

 rapidly shrunk to a very small size and the animal began to 

 show the external characteristics of a bull. This change was 

 very slight at first but soon 'became 'much more marked. After 

 a lapse of 8 months the general external fades and the behamor 

 of the co-iv were like those of a bull to a remarkable degree. 

 The neck had become thickened in its posterior parts, and had 

 developed a well marked crest, as is characteristic of a bull. If 

 the cow had been so screened that only her fore-quarters and 

 neck were visible any observer would have unquestionably pro- 

 nounced her a imale. The assumption of male characters in 

 these regions was ' oomjplete and perfect. In the hind-quarters 

 the change from characteristic female conformation in the male 

 direction, while less striking than in the anterior parts, was still 

 clearly evident. The udder shrunk away tO' a very small size. 

 The hips and rump to-dk on the smooth, rounded', filled-out 

 appearance which is characteristic of the bull but not of the cow. 



Altogether the assumption of male "■secondary characters was 

 so distinct as tO' arrest at once the attention oif all who saw 'her 

 in the bam, including casual visitors who knew nothing of the 

 history of the animal. It is cxitreimclly difficult to describe the 

 change exactly, chiefly because the secondary sexual characters 

 in cattle arc so indefinite. Anyone acquainted with cattle can 

 tell at a glance the sex of a mature animal from its general 

 bodily conformation, without looking at the sex organs, but 

 it is difficult tO' itemize the differences. Perhaps the crest in 

 the male, and the associated development of hair on the dorsum 



