On the occurrence of Gossypium herbaceum L. in India

The note deals with the alleged occurrence of the true Gossypium herbaceum L. in India. The author agrees with some previous authors that it does not occur there, and treats the Indian plant as G. herbaceum L. var. acerifolium (Guill. & Perr.) Chevalier.     

Observations on the physical and chemical composition of diets for the Angoumois grain moth

Larvae of the Angoumois grain moth readily established in refined diets moulded into pellets. A bioassay based on larval establishment, weight, and numbers of adults was used to determine the insect's major nutritional requirements. The results showed that test diets containing corn starch (49–64%), glycerol (15–19%), casein (9%), yeast (7·5%), and wheat germ (2·6%) permitted good establishment and normal development. No further improvements were obtained when diets were supplemented with a mineral or vitamin mixture, cholesterol, or ascorbic acid. It was concluded that yeast and wheat germ supplied the insect with adequate amounts of lipids, vitamins, and minerals. However, even the best diets lacked some undetermined growth promoting factor because larvae grew better in a natural product control diet.