I'HE CANADIAN ENTOAIOLOGIST. 309 



Prof. Smith's book, as, for instance, some one of the regularly occurring 

 insect enemies of crops, e. g., cutworms, white grubs, canker worms, the 

 Colorado potato beetle, plum curculio, or tussock moth, etc., etc., let him 

 turn it up in the index of this work and he will be referred to a clear and 

 concise account of the insect and its habits, together with recommen- 

 dations as to the best remedies. The identification of the different species 

 is made easy by a profusion of remarkably good illustrations. The whole 

 book, including the index, consists of 481 pages, while the number of 

 illustrations is no less than 483, all of which are unexceptionable, if a 

 mental reservation may be allowed as to the three plates of bumble bees 

 and bee flies, Nos. 398, 464, and 473, taken evidently from photographs. 

 It seems a pity that these plates should have been included in this work 

 on economic entomology. They were made from very badly mounted 

 specimens, and have no special reference to the text. The arrange- 

 ment of the book, for ease of reference, is well planned and well 

 carried out, the objects the author had in view, as explained in 

 the introduction, being adhered to in a most satisfactory and complete 

 manner. Part I. consists of eight short chapters on the Structure 

 and Classification of Insects. Part II., the Insect World, which forms 

 the bulk of the book, is a systematic treatment of the various common 

 injurious insects in their natural orders. This portion is particularly well- 

 balanced, enough space being devoted to each species treated of to satisfy 

 the inquirer, without, as is sometimes the case, giving undue importance 

 to some at the expense of others. Part III. treats of Insecticides, 

 Preventive Remedies, and Machinery. This work cannot fail to prove of 

 great value to the farmer and fruit-grower, as well as to the amateur 

 gardener and student of insect life, who will find in it an authoritative 

 book of reference of small size but comprehensive and easy to consult. 



J- F. 



Missouri Botanical Garden — Seventh Annual Report, 1896. 



Very few reports are more eagerly looked for every year by those 

 who are lucky enough to secure copies than Prof. Trelease's report on the 

 Missouri Botanical Garden and the Henry Shaw School of Botany at 

 St. Louis, Mo. This rej)ort contains not only the Director's annual 

 statement on the condition of the Garden and its finances, but also 

 valuable monographs on different genera of plants. In the present 

 volume we find the following : (i) The Juglandacece of the United States, 



