A French extract from an old Chinese treatise on raising silkworms, translated and summarized in the manner of the Jesuit accounts of China. It covers the cultivation, selection, pruning and propagation of mulberry trees (including wild Tche mulberries and oak leaves as alternatives), and the housing of the worms. It also covers choosing breeding cocoons and moths, bathing and hatching the eggs, feeding by age, moulting, diseases, spinning of cocoons, killing the chrysalids and preparing cocoons for reeling, and rearing in summer and autumn.