───────────────┬───────┬───────┬───────┬───────┬──────┬───────┬───────┬──────┬─────── │Woman. │ Cow. │ Goat. │ Ewe. │Camel.│ Mare. │ Ass. │ Sow. │Bitch. ───────────────┼───────┼───────┼───────┼───────┼──────┼───────┼───────┼──────┼─────── Density │1032.67│1033.38│1033.53│1040.98│ │1033.74│1034.57│ │1041.62 Water │ 889.08│ 864.06│ 844.90│ 832.32│ │ 904.30│ 890.12│854.90│ 772.08 Solids │ 110.92│ 135.94│ 155.10│ 167.68│134.00│ 95.70│ 109.88│145.10│ 227.92 Butter │ 26.66│ 36.12│ 56.87│ 51.31│ 36.00│ 24.36│ 18.53│ 19.50│ 87.95 Casein and │ │ │ │ │ │ │ │ │ extractive │ │ │ │ │ │ │ │ │ matters │ 39.24│ 55.15│ 55.14│ 69.78│ 40.00│ 33.35│ 35.65│ 84.50│ 116.88 Sugar │ 43.64│ 38.03│ 36.91│ 39.43│ 58.00│ 32.76│ 50.46│ 30.30│ 15.29 Salts(by │ │ │ │ │ │ │ │ │ incineration)│ 1.38│ 6.64│ 6.18│ 7.16│ │ 5.23│ 5.24│ 10.90│ 7.80 ───────────────┴───────┴───────┴───────┴───────┴──────┴───────┴───────┴──────┴─────── _Becquerel and Vernois_. Not only does the milk vary so widely with the genera, but that of the ruminating animal with its great excess of casein coagulates in the stomach into large dense clots which are not easily penetrated and digested by the peptic juices while that of woman or soliped forms loose clots, easily permeable by the gastric fluids and therefore much more readily digestible. Indeed the milk of these monogastric animals often form loose floating flocculi only, instead of solid clots. As cows are usually selected for foster-mothers to the orphaned animals of other genera this becomes a source of danger to the young and must be obviated by modifying the milk more in keeping with that of man or soliped. As predisposing causes, must be named a weak constitution and damp, dark, filthy, or otherwise unwholesome buildings. Buildings with no drainage nor ventilation beneath the floors, standing on filth-saturated soil, and those with double walls holding dead rats and chickens are especially to be dreaded. In breeds of inconstant color the lighter colored calves (light yellow, light brown) are more subject to such attacks than the darker shades (dark browns, reds, blacks). The weak constitution may be a result of close breeding, without due consideration of the strength and vigor of the parents. Then young animals kept indoors in impure air, damp and darkness are more susceptible than those that are kept in pasture and are invigorated by exercise, pure air and sunshine.