The study of soil science is the first step in the arduous task of prevention of erosion and rehabilitation of soil. Scientific studies have resulted in several advances in this area and Benchmarks have been laid down for the benefit of soil conservation authorities, government agencies and lay farmers. The present publication attempts to bring together the basic principles of soil science and the dynamics of erosion in all forms, fo'r the benefit of the student as well as researcher and practising professional associated with conservation of natural resources. The text has been sell supported by prolific tables, diagrams pictures and illustrations. The publication will be of immense use to all those interested in this vital scientific area of earth studies