The Principles of Plant Culture 295 pp., Ill, iimo, $1.25 



By the late Professor E. S. GOFF, of the University of Wisconsin. Revised 

 by Professors L. R. Jones and J. G. Moore, of the University of Wisconsin. 



A text-book for beginners in agriculture and horticulture. It explains 

 the cycle of plant life from seed to flower and fruit ; the influence of 

 environment on plants, as also of temperature, unfavorable water 

 supply, of weather and food supply; the destructiveness of weeds, 

 insects and diseases. It discusses propagation, pruning, transplanting 

 and plant breeding. 



The Teaching Botanist 439 pp., izmo, $1.25 



By WILLIAM F. GANONG, Professor of Botany in Smith College. 



A manual of information upon botanical instruction, together with 

 outlines and directions for a comprehensive elementary course. This 

 work consists of a series of descriptive essays upon matters important 

 in botanical education, together with suggested outlines, with full practi- 

 cal directions, for a general or introductory course in accordance with 

 the results of the best recent experience. 



Diseases of Economic Plants 400 pp., ill., i2mo, $2.00 



By F. L. STEVENS, Professor of Plant Pathology, University of Illinois, and 

 J. G. HALL, formerly Professor of Plant Pathology, Washington State 

 College. 



Designed for those who wish to recognize and treat diseases without 

 the burden of long study as to their causes. It indicates the chief 

 prominent characters of the most destructive diseases of plants, 

 caused by bacteria or fungi, in the United States, in such a way that in 

 most cases reliable diagnoses may be made. Information is given 

 regarding the best methods of prevention or cure for these diseases. 



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