A French treatise by Loiseleur-Deslongchamps on growing mulberry trees and raising silkworms in the climate of Paris, including methods for obtaining several silk harvests per year. The first part covers mulberry varieties, planting, and leaf yield; the second covers silkworm rearing, with the author's own experiments, losses, durations, temperatures, and the design of silkworm houses. The third part examines caterpillars other than the silkworm that produce other silks or silky matter, including Chinese wild silkworms, the great peacock moth, North American cocoons, and Bengal cocons brought back by Lamarepicquot.