336 MILK. 



an approximate representation of the composition of the milk-fat, 

 since its constituents appear to vary considerably under different 

 physiological relations. 



The quantity of fat contained in milk appears to vary very con- 

 siderably, for Simon* found in women's milk from 2*53 to 3'88-g- 

 of butter; Clemmf and Scherer found on the fourth day after 

 delivery 4'297-g-, on the ninth day 3'532f, and on the twelfth day 

 3'345; Chevallier and Henry J found 3'55-g-, and Haidlen 

 3-4 and 1'3-g-. Simon found in cows' milk from 3'80 to 5*10--, 



Herberger 3'89 and 3'75, Chevallier and Henry 3'13, Bous- 

 singault|| 3*9Og-, Playfair^f 4'90-g- (as the mean of nine observations 

 made on the milk of the same cow), and Poggiale** 4'38-g- (as the 

 mean of ten analyses). Clemm found 6*952 J in mares' milk; 

 Simon 1'21, and Peligot 1'29-g- in asses' milk. Chevallier and 

 Henry found 4'2-g- in sheep's milk. Fayenft found 4 '08, Cheval- 

 lier and Henry 3'32, and Clemm 4*251^ in goats' milk. Schloss- 

 bergerJJ found 2'65^ in the milk of a buck; and in bitches' milk 

 Simon first found 16*2, and afterwards 13'3^; while Dumas 

 found from 7 '32 to 12'40, and Bensch|||| 10'75 and 10'95. 



Simon found 5'OOJf of butter-fat in the colostrum of women's 

 milk, and coincides with Boussingault in giving 2*6-^ as the 

 quantity occurring in that of the cow. Chevallier and Henry 

 found 5*0-^ in that of the ass, and 5 2-- in that of the goat. 



L'Heritier found, from a comparative analysis of the milk of 

 two nursing mothers, aged twenty-two years, one of whom was 

 dark and the other fair, that the milk of the former was richer in 

 fat (containing 6 -48 and 5 '63-g-) than that of the latter (which con- 

 tained 3*55 and 4'05-g-). This observation, which requires to be 

 confirmed by further investigations, is the more remarkable as the 

 other organic constituents were considerably increased in the milk 

 of the brunette. 



L'Heritierll found from 1'62 to l'70g- of casein, and from 7*12 



* Die Frauenmilch u. s. w. Berlin, 1 838. 



+ Handworterb. d. Physiol. Bd. 2, S. 464. 



Journ. de Pharm. T. 25, p. 333 et 401. 



Ann. d. Ch. u. Pharm. Bd. 45, S. 273. 



II Ann. de Chim. et de Phys. 3 SeV. T. 8, p. 98. 



IT Lond., Edin., and Dublin Phil. Mag. Vol. 23, p.' 281. 



** Compt. rend. T. 18, p. 505507. 



ft Ann. de Chim. et de Phys. 1839, p. 144. 



Jt Ann. d. Ch. u. Pharm. Bd. 51, S. 431. 



$$ Compt. rend. T. 21, p. 708717. 



III! Ann. d. Ch. u. Pharm. Bd. 61, S. 221 227. 



TIT Traite 7 de Chimie pathologique. Paris, 1842, p. 638. 



