Viswamitra came from the Indian Institute of Science, Bangalore, to work in Hodgkin's laboratory on the structure of the peptide antibiotic thiostrepton supported by a grant from the Squibb Institute for Medical Research. He returned to Bangalore to make his career, spending further periods of research in Oxford and Cambridge.

Correspondence relates to research and career. Includes 'Abstract of work done on thiostrepton during the period Nov. 65 - Oct. 66', and recommendations.