In two experiments attempts were made to modify the character of the body fat of rats receiving soybean oil in their diet.

In the first experiment 14 lots of 6 rats each (each rat individually caged, fed and attended) were fed a diet composed of 50 percent solvent process soybean oilmeal, 2 percent yeast, 1.5 percent salts, 10 percent soybean oil, codliver oil concentrate (Upjohn) and cane sugar to make 100 percent. To this diet was added certain adjuvants which might have some effect on fat metabolism. Of the 13 adjuvants fed, carotene, bile salts, agar-agar, sodium fluoride and calcium chloride probably induced the deposition of fats with somewhat lowered iodine values.

In the second experiment six lots of seven rats each, managed as indicated above, were fed approximately the same diet as noted above except that starch replaced the cane sugar. To this diet was added carotene at three levels; or choline chloride (Merck) or nicotinic acid at levels of 1 percent of the diet. None of these adjuvants influenced greatly the iodine numbers of the deposited body fats.

The difference in the results obtained in the two experiments where carotene was fed are discussed.