Micro-Organic Rock Weathering

Abstract

THE following results obtained in 1922 by the late Sir John Harrison, formerly director of science and agriculture in British Guiana, may interest pedologists. They represent the chemical composition of percolated water that had passed through sterilized granular masses of dolerite and of granite packed into four glass cylinders set up in the laboratory. In two experiments, the materials were inoculated with washings from the surfaces of weathering rock of the same kind ; in the other two, the conditions throughout were sterile.