Great progress has been made in the past decade in the field of sericulture research. Sericulture technique covering various aspects has also advanced greatly. Like agriculture, sericulture, as an industry, requires greater development in research and technology aimed at increased production. This text covers the complete range of subjects with current data relating to mulberry and silkworm. Particular emphasis has been laid on the basic aspects of stable crop of silkworm and various preventive measures against adverse factors. Topics covered include the sericulture industry and its future; mulberry cultivation; silkworm and its strains; silkworm eggs; morphology, physiology, ecology and genetics of the silkworm; diseases of silkworms; rearing of silkworms; cocoon; silkmoth and egg production; and utility of byproducts.