The advent of the separator that takes all the fat out of milk brings into discussion the best methods of supplementing the fat extracted, and what grains will most effectually do it. In Bulletin No. 14 this station reported an experiment in feeding full new milk against skim milk, to which flax meal was added. In that experiment the milk was skimmed after 12 hours setting, after which it still contained considerable fat, varying from 1.10 to 1.35 per cent. The results indicated that skim milk and ground flax compared favorably with full new milk, in raising calves. This experiment deals with separated milk, that had all the fat taken out.

The plan of the experiment was to select six heifer calves, three short horns, and three Holsteins, as near alike in age, weight, and condition, as possible.