adding iron to milk might destroy any toxicity present. Therefore, o.5 mg. iron as iron chloride, o.o5
rag. copper as copper sulfate and o.o5 rag. manganese as manganese sulfate
per day were administered to all rats bi-weekly by dropper. In a similar manner,
two drops of of A and D oil (3ooo I.U. of vitamin A and 4o0 I. U. of
vitamin D per gram) were administered to each rat twice a week.