By C. V. Riley. Bulletin No. 10 of the Entomological Division of the United States Department of Agriculture.

In Washington, as elsewhere, Prof. Riley finds there are four serious pests to the shade trees - one, the Elm-leaf Beetle, that skeletonizes the leaves of the Elm; the Bag-worm that eats everything, but especially Arbor Vitaes and conifers generally; the Tussock moth which is equally omnivorous, and the fall Web-worm. Fortunately the Tussock moth is the worst to handle. With the information gathered by Prof. Riley about these things, destruction is within the scope of probability, and not so difficult to bring about.

The combination of the accurately scientific, with that which is practicable and reasonable is a rare trait in the character of one at the head of affairs. Few men have it in the degree possessed by Prof. Riley, and we never take up a work issued by the Government from his pen without feeling that our Government was fortunate in securing his services. The work can be had on application to the Department at Washington, as well as a report on the experiments made with various insecticides. Cold water for cabbage proves useless, as does salt water. Pyrethrum powder is the best for this enemy.