Publisher's Synopsis
Excerpt from Some Plant Sources of Vitamins B and C
On this food the rats slowly lose appetite and after a time decline in weight. Then if the diet is not changed or improved by the addition of substances containing Vitamin B, death ensues. In most cases the animals promptly improve in appetite when Vitamin B is given. But when the source of vitamin is too bulky so that it prevents the ingestion of sufficient of the standard food, the total intake of all essentials may become inadequate. The ability to cause the recovery of rats which have been declining in weight on a diet which is known to be complete in every respect except that it lacks Vitamin B, has been taken as a proof that the material in question contains the latter.
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