Abstract: This is summary of the chemical analyses of fumarole gases, water, sublimates, and water extracted from sublimates from Mutnovsky volcano, 1963-64, as documented and analyzed by E.K. Serafimova of the USSR Science Academy. Spectral analyses of the sublimates was conducted by G. I. Arsanova of the USSR Science Academy. Other Description: Serafimova, E.K., (1966), "On the Chemical Composition of Fumarole Gases from Mutnovsky Volcano." USSR Science Academy Volcanology Station Bulletin, (42):21-28