F.F. Erisman, a prominent scientist, gifted tutor, and outstanding public figure is ranked among the founders of hygienic science in this country. He created a university course of hygiene and founded a large scientific school. His scientific and public work was continued by many disciples, such as G.V. Khlopin, C.F. Bubnov, N.K. Ignatov, S.S. Orlov, A.N. Sysin, N.V. Krasnovskaya, etc. To-day, personnel of the Department develop universal approaches to rate setting as regards environmental factors harmful for human health.