AGRICULTURAL BOOK REVIEWS 



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details. The very title "Outlines" gives the 

 keynote as stated in the authors' preface, "The 

 aim of this volume is not to furnish an exhaus- 

 tive treatise of the subject, but an outline and 

 sufficient detail to enable the general student 

 of dairying to obtain as comprehensive an idea 

 of bacteria and their effects on milk and other 

 dairy products as may be possible without the 

 aid of laboratory practice." — Creamery 



SANDERSON. EZRA DWIGHT, and PEAIRS, 

 LEONARD MARION. Insect pests of farm, 

 garden and orchard. 2d ed rev '21 Wiley 



$4.50 21-6964 



Mr Sanderson is professor of rural organiza- 

 tion, Cornell University and Mr Peairs is pro- 

 fessor of entomology, West Virginia University. 

 "Illustrated account of the principal insect 

 pests. The illustrations are drawn from the 

 most varied and authoritative sources. The 

 text Is clear and direct, and the book is emi- 

 nently readable. On examining it one is at once 

 impressed with the marvelous value of co-oper- 

 ation in scientific work. Here are gathered 

 from all quarters the results of the most la- 

 borious and painstaking work of hundreds of 

 scientific men all over the country. ... It is 

 difficult to see how this matter could be put into 

 form more available for the general reader and 

 student." — American microscopical society 



Contents: Injury to crops by insect pests; 

 Beneficial insects, predaceous and parasitic; 

 Structure and development of insects; Farm 

 methods for the control of insects; Insecticides; 

 Spraying and dusting apparatus; Insects affect- 

 ing grains, grasses and miscellaneous crops; In- 

 sects injurious to small grains; Insects in- 

 jurious to corn; Insects injurious to stored 

 grains; Insects injurious to clover and alfalfa; 

 Insects injurious to tobacco; Insects injurious 

 to cotton; Insects injurious to potatoes and 

 tomatoes; Insects injvirious to beans and peas; 

 Insects injurious to beets and spinach; Insects 

 injurious to cabbage and related crops; In- 

 sects injurious to melons, cucumbers, squash, 

 etc.; Insects injurious to miscellaneous garden 

 crops; Insects injurious to the strawberry; In- 

 sects injurious to the raspberry and black- 

 berry; Insects injurious to the currant 

 and gooseberry; Insects injurious to the grape; 

 Insects injurious to orchard fruits; Insects in- 

 jurious to the apple and pear; Insects injurious 

 to the peach, plum and cherry; Insects injurious 

 to citrus fruits; Insects injurious to man and 

 in the household; Insects injurious to domestic 

 animals and poultry. Bibliography. 



SHANAHAN, EDWARD WILLIAM. Animal 

 foodstuffs, their production and consump- 

 tion with a special reference to the British 

 Empire; a study in economic geography and 

 agricultural economics. '20 Button $5 20-7575 

 "This work is the result of investigations 

 conducted at the London School of Economics, 

 and is an attempt to survey impartially the 

 productive resources of all important parts of 

 the world in respect to animal foodstuffs. 

 Throughout the whole of the investigation the 

 close relationship between animal foodstuffs and 

 concentrated feedstuffs has been insisted upon. 

 The main conclusion drawn has been that the 

 supplies of animal foodstuffs tend at present, 

 and are still more likely in the future, 

 to be deficient. This has led to an enquiry 

 into the economic position of animal industries 

 in agriculture, into their costs of production, 

 and into the economics of consumption in re- 

 lation to production in respect of them. All 

 these have been studied in their bearing upon 

 future movements. A distinct aim in the en- 

 quiry has been to correlate in broad outlines 

 in one important class of goods the economics 

 of consumption with those of production, which 

 constitutes a new field of investigation in 

 economic geography." — Publisher. 



The book contains historical and statistical 

 material and a general survey of the sources 

 of production and world trade with special 

 emphasis on production and consumption of 

 animal foodstuffs in the British Empire. 



SMITH, ERWIN FRINK. Introduction to the 

 bacterial diseases of plants, il '20 Saunders 

 ?10 20-20204 



"There are many unique features about this . 

 new book. It is the first treatise of its kind, 

 a product of the author's own researches, and 

 it fills a need that was rapidly becoming ur- 

 gent. 



The subject-matter is arranged in five parts: 

 I. A Conspectus of Bacterial Diseases of 

 Plants, dealing with host-range, susceptibility, 

 infection factors, incubation, recovery, agents 

 of transmission, host-reactions, and other as- 

 pects of the science. II. Methods of Research, 

 apparatus, culture media, technic of isolation, 

 etc. HI. Synopsis of Selected Diseases, in 

 which the type, cause, technic, and literature 

 for fourteen bacterial diseases are given, and 

 for each disease so treated, a laboratory out- 

 line in the form of questions and suggestions 

 is presented. IV. Miscellaneous, notes on ad- 

 ditional diseases, suggestions for special study, 

 the production of tumors in the absence of 

 parasites, speculations on the chemical and 

 physical stimuli underlying tumor- formation, 

 and on the production of teratosis in the ab- 

 sence of tumors and of parasites. V. General 

 Observations on experimentation, interpreta- 

 tion, ethics of research, and siinilar matters. 



In a word the value of this handsome vol- 

 ume lies in the fact that its author who is in 

 charge of the Laboratory of Plant Pathology, 

 U.S. Bureau of Plant Industry, is an authority 

 on the subject. It may as well be admitted 

 that many Pathologists do not feel qualified 

 to carry on research in this field, and so it is 

 gratifying that the "father of the science of 

 bacterio-phytopathology" has put into avail- 

 able form the results of his many years of ex- 

 perience. 



The reviewer must disappoint those who 

 have not seen this book by omitting the state- 

 ment that "the illustrations are poor." On 

 the contrary, they are excellent when con- 

 sidered from all points of view. The enlarge- 

 ments of bacterial colonies should prove of 

 great service to anyone who desires to make 

 comparative cultural studies. The casual ob- 

 server may be led to inquire whether the 

 number is not excessive, but the teacher and 

 student alike may find in each one an impres- 

 sive lesson. 



The book fills the need of the teacher. While 

 it is designed primarily for laboratory use, it 

 also contains much valuable matter for supple- 

 mentary reading. In a few cases fuller cita- 

 tions to literature would facilitate the work 

 of the teacher. The investigator will find it 

 an indispensible manual." — Phytopathology 



SMITH, JOHN WARREN. Agricultural meteor- 

 ology; the effect of weather on the yield of 

 crops. (Rural science ser.) '20 Macmillan 

 $2.40 21-669 



This book is notable as "the first text on the 

 subject of agricultural meteorology that has ever 

 been prepared." It is designed primarily for 

 university and college students, but is believed 

 to be practicable for agricultural high schools 

 and farmers' reading courses and also of inter- 

 est generally to individuals desiring information 

 regarding the relation of climate to crops. 



The book includes brief but clear and simple 

 expositions of the essential but heretofore scat- 

 tered and undigested information on the effect 

 of weather on the growth and yield of crops; the 

 influence of climate and weather on insect activ- 

 ities and the development of plant diseases; and 

 the protection of crops, animal life, and birds 

 from damaging meteorological phenomena. The 

 relation of climate to crop distribution and farm 

 operations is also discussed, and the effect of 

 different weather factors on the yield of cotton, 

 corn, wheat, oats, rye, potatoes, tobacco, fruit, 

 and other crops is treated in detail. 



The first chapter deals briefly with introduc- 

 tory meteorology, including some of the elemen- 

 tary and fundamental acts and principles neces- 

 sary to an intelligent understanding of the sub- 

 ject. Succeeding chapters discuss agricultural 

 meteorology, agricultural climatology, correla- 

 tion, climate and crops, climate and farm oper- 

 ations, weather and crops, the effect of weather 



