THE REPRODUCTIVE GLANDS. 



441 



HUMAN BEING. 



Nine days be- Day of partu- Twenty-four Nine days later, 



fore partu- rition. hours after 



rition. parturition. 



Water ........ 85.86 



Solids ........ 14.15 



Fat ...... . 2.35 



Lactose ..... 3.63 



Salts and extractives 0.54 



82.80 

 17.20 



4 ' 00 

 5.00 

 7.00 



Cow. 



Immediately Twenty-four 



after partu- hours later. 

 rition. 



Water ........ 73.07 82.38 



Solids ........ 26.93 17.62 



Albumins .... 16.56 4.50 



Casein ...... 2.65 4.50 



Fat ....... 3.54 4.75 



Lactose ..... 3.00 2.85 



Salts and extractives 1.18 1.02 



84.30 

 15.70 



0.512 



Three days 

 later. 



78.70 

 21.30 

 7.50 

 7.30 

 4.00 

 1.50 

 1.00 



88.580 

 11.420 



3 ' 690 

 3.530 

 4.300 

 0.169 



Average of 

 30 analyses. 



74.05 

 25.95 

 13.62 



4.66 



3.43 



2.66 



1.58 



I also append a few analyses of cows' colostrum, which I have 

 taken from G. Simon (the analysis were made on successive dogs) : 



Specific gravity . . . 1.0705 

 Fat ........ 3.00 



Solids ....... 23.85 



Total albumins ... 17.00 

 Casein ....... 5.50 



Albumin ...... 11.93 



Extractives ..... 0.07 



As I have already indicated, probably all colostra color active tinc- 

 ture of guaiacum blue even in the absence of hydrogen peroxide, and 

 also react with the Rohrnann-Spitzer mixture. The reaction is due 

 to a globulin-oxydase. 



So-called witch's milk is the fluid which can be expressed from 

 the mammary glands of both sexes immediately after birth. Its 

 qualitative composition is the same as that of milk. Like the colos- 

 trum, it is said to contain colostrum-corpuscles. According to 

 Schlossberger, Hauff, and others, it contains from 1.05 to 2.8 per 

 cent, of albumin, 0.82 to 1.46 per cent, of fat, and 0.9 to 6 per 

 cent, of lactose. It thus contains a smaller amount of water than 

 the milk. The secretion ceases several weeks after birth. 



Uterine milk is a fluid which can be obtained from the uterine 

 glands of ruminants after careful separation of the chorion villi. It 

 has the appearance of cream, and is morphologically and chemically 

 quite similar to colostrum. 



THE REPRODUCTIVE GLANDS. 



The Testicles. Of the chemical composition of the testicles as 

 such, little is known. Aside from the albuminoids which enter into the 

 construction of the supporting tissues of the glands, and the extrac- 



