SUMMABIES of some of the medical research work in progress in India are contained in the annual reports of the Indian Institute for Medical Research, Calcutta, and of the Haffkine Institute, Bombay, recently issued. In the former, studies on the cholera vibrio and production and therapeutic value of an anti-cholera serum, and on an anti-typhoid serum, have been pursued. Researches on malaria and kala-azar, and the problem of a nutritional survey of Indian food-stuffs and dietaries, have also been undertaken. The Haffkine Institute is the centre for the preparation of anti-plague vaccine, of which more than thirteen million doses were issued during 1937, and work is in progress to improve the efficiency of this vaccine. A survey of the rat population of Bombay hi connexion with the epidemiology of plague brings out the interesting fact that the brown and black rats, forming 70 per cent of the rat population of the city, are now highly resistant to plague, though formerly highly susceptible. In the Anti-Rabic Department, more than three thousand cases Were treated, with a mortality of 0-08 per cent.