THE MILK OF THE EWE, GOAT, AXD MARE. 



403 



The specific gravity varies from 1'035 to r043. 

 Besana gives the following table for correcting the specific 

 gravity to 15° C. : — 



TABLE CXX. 



I'emp. 

 5° to 10°, 

 11° „ 15°, 

 16° „ 20^, 

 21° „ 25°, 

 2()' „ 30', 

 31° „ 35°, 



Cori-ectiou. 

 Subtract 1-25 + 0-20 (10 — t )° 



0-25 (15 - n° 



Add . . 0-30 ( t - 15)° 



1-5 + 0-32 ( t - 20)° 



3-1 + 0-35 ( t - 25)° 



4-85 + 0-37 I I - 30)° 



The fat globules vary in size, according to Besana, from 0'(X)47 

 mm. to 0'0309 mm. This is not in accord with Pizzi's observa- 

 tions (p. 390). Sheep's milk throws up no cream if left to rest, 

 owing to its great viscosity. The cream may, however, be 

 removed by a separator, or by dilution with an equal bulk of 

 water. 



The action of rennet does not differ from that with cow's milk, 

 but the curd is firmer. 



The Milk of the Goat. — The following is thi? mean composition 

 given by various authorities : — 



TABLE CXXL— Composition of (i oat's Milk. 



None of the constituents differ sufliciently from those of cow's 

 mUk to need detailed notice. 



The fat is, however, very white, and the milk and butter have 

 a smell of the goat. 



The Milk of the Mare. — Most of our knowledge of mare's 

 milk is due to ^'ieth, who carried out an extended series of obser- 

 vations on the stud of mares at the International Health Exhi- 

 bition in London during 1884. 



