The Symposium on Laboratory Shear Testing of Soils, sponsored by ASTM Committee D18 on Soils for Engineering Purposes and the National Research Council of Canada, was held in four sessions from Sept. 9 to 11, 1963, in Ottawa, Canada. It was the second cooperative soils symposium held by Committee D18 outside of the United States. The first symposium was held in Mexico City in 1957.