The papers in the Symposium on Sampling of Soil and Rock were given at the Seventy-third Annual Meeting of the American Society for Testing and Materials held in Toronto, Ont., Canada, 21-26 June 1970. The sponsor of this symposium was Committee D18 on Soil and Rock for Engineering Purposes. B. B. Gordon, Woodward Clyde and Associates, and C. B. Crawford, National Research Council of Canada, presided as symposium cochairmen.