315 
According to Farmers’ Bulletin No. 29, United States Department 
of Agriculture (33), 1895, cow’s milk has the following composition: 
Per cent 
87 
3.6 
3.3 
0.7 
47 
0.7 
100.0 
Van Slyke (34) gives the following average analysis of cow’s milk: 
Water. 
| Total 
solids. 
1 
Fat. 
Casein. 
Albu- 
min. 
Sugar. 
Ash. 
Average of 5,552 American analyses compiled by 
the author 
87.1 
12.9 
3.9 
2.5 | 
0.7 
5. 1 
0.7 
Average cheese-factory milk for the season (May 
to November) in New York State 
87.4 
, 12.6 
3. 75 
2.45 
0.7 
5.0 
0.7 
The following compilation, according to Leach (35) from Koenig’s 
Chemie der mens. Xahr. u. Genuss., gives a very good idea of the 
composition of human milk and that of a number of different animals : 
(Fat =3.6 
Solids = 13| Solids not fat =9. 4^ ‘ ‘ 
"wot ^ Milk sugar. 
Num- 
ber of 
analy- 
ses. 
Kind of milk. 
Specific 
gravity. 
Water. 
' Casein. 
Albu- 
min. 
! Total 
] proteids. 
tat. 
Milk 
sugar. 
Ash. 
800 
Cow’s milk: 
Minimum 
1. 0264 
80.32 
1. 79 
0.25 
2.07 
1.67 
2. 11 
0.35 
Maximum 
1.0370 
90.32 
6.29 
1.44 
6.40 
6.47 
6.12 
1.21 
Mean 
1. 0315 
87. 27 
3.02 
0.53 
3. 55 
3.64 
4.' 88 
0. 71 
200 
Human milk: 
Minimum 
1.027 
81.09 
0. 18 
0.32 
! a69 
1.43 
3.88 
0.12 
Maximum 
1.032 
91.40 
1.96 
2.36 
4 70 
6.83 
8.34 
1.90 
Mean 
87. 41 
1. 03 
1. 26 
2.29 
3.78 
6. 21 
0. 31 
200 
Goat’s milk: 
Minimum 
1.0280 
82.02 
2.44 
0.78 
3. 10 
3. 26 
0.39 
Maximum 
1.0360 
90. 16 
3.94 
2.01 
7. 55 
5. 77 
1.06 
Mean 
1.0305 
85.71 
3.20 
1.09 
429 
4 78 
4.46 
0.76 
32 
Ewe’s milk: 
Minimum 
1.0298 
74 47 
3.59 
0.83 
2.81 
2. 76 
0. 13 
Maximum 
1.0385 
87.02 
5.69 
1.77 
9.80 
7.95 
1.72 
Mean 
1.0341 
80.82 
4.97 
1. 55 
6. 52 
6.86 
4 91 
0. 89 
47 
Mare’s milk: 
Mean 
1. 0347 
90. 78 
1. 24 
0. 75 
1.99 
1.21 
5. 67 
0.35 
5 
Ass’s milk: 
Mean 
1.036 
89. 64 
0.67 
1. 55 
2.22 
1.64 
5.99 
0. 51 
