66 THE SECRETIONS: 



5. Ewe's milk. 



Ewe's milk is an extremely rich, thick, white fluid, with an 

 agreeable smell and taste, and having a specific gravity of 1035 

 to 1041. Stipriaan, Luiscius, and Bondt found in 1000 parts: 



Water .... 632-0 



Solid constituents . . . 368-0 



Butter .... 58-0 



Casein .... 153-0 



Sugar .... 42-0 



Cream .... 115-0 



We cannot help thinking that in this, as well as in the pre- 

 vious analysis by the same chemists, the amount of solid con- 

 stituents, and especially of the casein, is higher than is likely 

 to be correct. Chevallier and Henri found in 1000 parts : 



Water .... 856-2 



Butter .... 42-0 



Casein .... 45-0 



Sugar .... 50-0 



Salts 6-8 



6. Bitches' milk. 



I have made two analyses of the milk of a bitch of the bull- 

 dog breed. The milk was drawn from one of the teats that 

 was not used by the pup : it was very thick, (whereas the milk 

 from the teats which the pup was in the habit of sucking was 

 very thin,) had a disagreeable animal odour, and a rather saltish, 

 mawkish, but not sweet taste. A period of ten days elapsed 

 between the two analyses. 



Anal. 84. Anal. 85. 



Water . . 657'4 682-0 



Solid constituents . . 342-6 318-0 



Butter . . . 162-0 133-0 



Casein . . . 174-0 146-0 



Extractive matter and traces of sugar 29-0 30-0 



Fixed salts . . 15-0 14-8 



This milk is distinguished from every other kind of milk that 

 I have examined, by the immense amount of its solid consti- 

 tuents, and by the nearly total absence of sugar. 



