Niraj Nath Das Gupta secured his Ph.D. degree from the University of London in 1938 and a DSc Degree from the University of Kalyani. He did significant work in tracer studies on the uptake of radio-iodine in thyroid diseases and on the life span of human leucocytes in leukemia. He was the first to start electron microscopic research on bacterial chromosomes and the morphology of the kala-azar parasite and Mycobacterium leprae. Dr. Das Gupta was the recipient of the Mahenralal Sirkar Research Gold Medal in 1950; the NN Dutt Memorial Medal of the Indian Medical Association in 1965, and the Prize of Chittaranjan Cancer Hospital in 1972.

Ennapadam Sundra Ayyar Narayanan obtained his Ph.D. from the University of London, the UK, in 1945. His research contribution covered the sub-disciplines of pure and applied entomology, taxonomy, anatomy, parasitology, field control operations, and biological control of insect pests and noxious weeds. As Director Central Sericultural Research Institute, he initiated investigations into experimental genetics, which led to the evolution of several new races of silkworms with superior commercial characteristics. Dr. Narayanan was a Fellow Royal Entomological Society, London; Indian Academy of Sciences, Bangalore, and National Academy of Sciences, Allahabad.

16-18 October, 2022

At Berlin, Germany.