Clxix. Seasonal Variations in The- Vitamin a Content of Certain Visceral Organs of the Geelbek or Cape Salmon (atractoscion Aequidens C. and V.) by Christopher Jarvis Molteno and William Sage Rapson

DURING a general survey of South African fish oils which is now in progress, it became probable that the considerable variations in the vitamin A content of certain oils were in some way associated with the intensity of feeding of the fish. As it was feasible that such variations might throw some light on the role of vitamin A in fish, a seasonal study was made, over periods of intensive feeding and of starvation, of both the liver and the visceral oils of the geelbek or Cape salmon. By visceral oils are meant here the combined oils from the pyloric caeca and the intestines. EXPERIMENTAL