Department of Chemistry, University of Pittsburgh, Pennsylvania
1. The appetites of eighty-seven normal rats, allowed theirchoice of sucrose, casein, hydrogenated fat, and salts, aredescribed. Thirty-four of these animals failed to grow.
2.The animals could be separated into two groups on the basisof their appetites for casein.
3. The appetites of these animals,aside from that for saltsand calories, showed no apparent relationto physiologic ornutritional need.
1 Contribution No. 581 of the Department of Chemistry, Universityof Pittsburgh. Aided by a research grant of the Buhl Foundation.