───────────────────────────────┬──────┬──────────┬──────┬───────┬────── │ │Casein and│Milk, │ │ │Water.│extractive│Sugar.│Butter.│Salts. │Parts │ matter. │Parts │ Parts │Parts │ in │ Parts in │ in │ in │ in Nature of Food. │1,000.│ 1,000. │1,000.│1,000. │1,000. ───────────────────────────────┼──────┼──────────┼──────┼───────┼────── Cows on winter feed: │ │ │ │ │ Trefoil or lucerne 12–13 │ │ │ │ │ lbs.; oat straw, 9–10 │ │ │ │ │ lbs.; beets, 7 lbs.; │ │ │ │ │ water, 2 buckets │871.26│ 47.81│ 33.47│ 42.07│ 5.34 Cows on summer feed: │ │ │ │ │ Green trefoil, lucerne, │ │ │ │ │ maize, barley, grass and 2│ │ │ │ │ buckets water │859.56│ 54.7│ 36.38│ 42.76│ 6.30 Goats milk on different │ │ │ │ │ rations: │ │ │ │ │ Straw and trefoil │858.68│ 47.38│ 35.47│ 52.54│ 5.92 Beets │888.77│ 33.81│ 38.02│ 33.68│ 5.72 ───────────────────────────────┴──────┴──────────┴──────┴───────┴────── The decrease of the solids but especially of the casein, sugar, and salts is very marked in the cow on poor winter feeding. In the goat fed on beets alone the increase of sugar and decrease of other solids is striking. To the same effect speaks the following table giving the results of an experiment with a ration of corn and cob meal, in contrast with one of sugar meal. Each cow had a common ration of 12 lbs. corn fodder and 4 lbs. clover hay, in addition to the test diet which was 12½ lbs. corn and cobmeal in the one case, and 10 lbs. sugar meal in the other. To avoid the misleading effects of a sudden transition from one food to the other, each special ration was fed for seven days before the commencement of each test period.