By C. V. Riley. Printed by the United States Department of Agriculture.

With the newly awakened interest in silk culture this work is timely and useful. What is said of raising plants from cuttings we think may stand revision in some future edition. The mulberry is subject to the attack of a species of Botrytis, a fungus allied to that which attacks the potato and the buttonwood tree; and from the experience of the Dr. Philip Physick's Cocoonery, at German-town, near Philadelphia, the failure of which caused the collapse of the celebrated "Morus Multicaulis" boom, the disease may be communicated from the leaves to the insects which feed on them. Propagation by cuttings, and especially by layers, always has a tendency to weaken the vital powers of a plant, and when to this is added the stripping of the leaves (which have been likened to the lungs of a plant), we can see how susceptible the plant becomes to insect ravages. Indeed, the multicaulis variety was nearly swept out of existence by this disease. To our mind nothing but seedling plants should be recommended for silk-worm culture.