120 



VITAMINS A AND CAROTENES 



Fi(i. 36. Hypervitamiiiosis A in tlie guinoa pig. Distal epiphyses of the femur 

 showing early closure. All cai'tilage has disap{)eared. From 9 days of age this animal 

 received approximately 600 I.U. of vitamin A per gram and 120 mg. of ascorbic acid 

 daily for 18 days. The large amount, of ascorbic acid did not iivfluciicc the clVcct of the 

 excessive vitamin A administration. 



