No. 4.] 



BABCOCK MILK TESTER. 



299 



distances in a dry pasture under a burning sun and an- 

 noyed by flies, for summer rations, the quality of the mixed 

 milk of a herd is quite uniform the year round. 



Third, variations in the quality of milk are largely due 

 to variations in the amount of fat. The amount of the other 

 solids is comparatively constant in ditferent kinds of milk. 

 While we frequently And a variation of 3 per cent or over 

 in the fat, the variation of the other solids is usually less 

 than 1 per cent. Ordinarily the amounts of solids not fat 

 and fat increase together, though not in the same ratio ; 

 and speaking in a very general way, ordinary milks have 

 about the following general composition : — 



We do not claim that this is absolutely accurate, but it is 

 approximately so, and near enough for the purposes of the 

 use of the Babcock tester in connection with the sale of 

 milk of the statute standard. The statute standard of milk 

 seven months in the year is 13 per cent of total solids, and 

 from the above table we see that such milk would ordinarily 

 have about the following composition : — 



Fat, 3.70 



Solids not fat, 9.30 



Total, 13.00 



Five months in the year the statute standard is 12 per 

 cent, which, if normal, is made up about as follows : — 



Fat, 3.00 



Solids not fat, 9.00 



Total, 12.00 



These facts are embodied in the statute standard as passed 

 by the Legislature last winter, which says : — 



