The Variations in the Mucin Content of the Bulbo-Ürethral Glands. 5 



ill a more or less equatorial section, gave a mucin reaction („mucin 

 glands") and (ii) those in which less than half gave this reaction (,,noii- 

 niucin glands"). Among the „Mucin glands" were some, forming a very 

 definite group, which consisted almost entirely of acini formed of the 

 most extreme tall, columnar, mucinous type of cell. Individuals with 

 ,, mucin glands" were usually less numerous than those with „non- 

 mucin glands" but their proportion varied considerably with the time 





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Curves showing the monthly incidence of Bartholins glands rich in mucin 

 in cats which are not pregnant or lactating. upper curve represents the 

 percentage of cats, more than half of whose gland cells contain mucin: 

 the lower the percentage of those with the glands formed almost entirely 

 of tall mucinous cells. 



of the year as shown in the curve, attaining a maximum from December 

 to March in the months tried. As the* signs of oestrus in a living cat 

 appeared to be slight, the uterus and ovaries were examined in a hund- 

 red cats which were neither pregnant nor lactating, as well as the glands. 

 Fifty-nine of the hundred had ,,non-mucin glands" and forty-onC' ,, mu- 

 cin glands": of these latter fifteen were of the very extreme mucin type 

 already alluded to. Corpora lutea in the ovaries were present with 



