By Mrs. Mary Treat. New York: Orange Judd Co. It is amazing how slow knowledge travels. It must be now nearly thirty years since Miss Margaretta Morris wrote: "In many potato fields in the neighborhood of Germantown, Pennsylvania, every stem was infested, causing the premature decay of the vines, and giving to them the appearance of having been scalded." This was said of the Baridius trinotatus, or potato stalk-weevil. Not a quarter of a mile from the former home of this distinguished entomologist was a potato field so scalded this summer, and on the writer of this telling the owner it was attacked by the insect, he was assured they were only " suffering from the drouth." It made no difference that the writer pointed to another patch, planted earlier, on dryer ground, and still green; the stems had to be slit, and the insect ravages exposed before the good farmer would believe - and even then he thought the "drouth did more nor the insect," as he expressed it. Few can be found who know anything of it, yet it is more than likely that it is more destructive to the crop throughout the country than the more dreaded fungus disease. There is no doubt there is a good field yet for a work of this kind, which tells of these and other foes.

Mrs. Treat, the author, is the estimable lady who dates from Vineland, New Jersey, and who is well known by the numerous useful productions of her pen. No one is better fitted, and no one could have done better, and the publishers' share in the work is worthy of the author's pen.