This enlarged edition has been revised to include the more recent knowledge of nutrition. It is planned primarily for workers in tropical regions and is a reflection of conditions and practices in Ceylon and the East. The initial chapters deal with the physiology and chemistry of the basic food substances. This section is followed by detailed consideration of the individual vitamins, with useful tables of food sources and available quantities. There is a useful and extensive list of foodstuffs, including fruits and vegetables, with the corresponding energy. mineral, thiamine, vitamin A and ascorbic acid values. A brief chapteron insect pests of stored cereal and pulses is useful for the tropical worker. The treatment of the subject matter and the content of the text as a whole is oriented to the practitioner.