Hural Science 



Edited by PROFESSOR L. H. BAILEY. 



BOOKS which state the underlying principles of 

 agriculture in such language that they may 

 be read at the home fireside, in the office, at 

 the club or grange, or used as text -books. Each 

 is substantially bound in blue cloth. These books 

 combine the results of the very latest and best 

 science with the best skill of practical farm work 

 and management. Each one is written by a special- 

 ist who has attained reputation for long -continued 

 and conscientious work. Each volume is read- 

 able, simple, clear-cut, practical, up to date, and 

 thoroughly scientific and reliable. Four volumes 

 are now ready. 



THE SOIL : Its Nature, Relations, and Fundamental 



Principles of Management. By F. H. 



KING, Professor of Agricultural Physics in the University of 

 Wisconsin. 303 pages, 45 illustrations. 75 CtS. 



It comprises an introduction, which discusses the making of soils 

 by natural agencies ; and chapters follow on the nature, functions, 

 origin and wasting of soils ; texture, composition, and kinds of 

 soils ; nitrogen of the soil ; capillarity, solution, diffusion, and 

 osmosis ; soil water ; conservation of soil moisture ; distribution 

 of roots in the soil ; soil temperature ; relation of air to the soil; 

 farm drainage ; irrigation ; physical effect of tillage and fertilizers. 

 It has received the warmest approbation of teachers and fanners 

 ia all parts of the country. 



" I consider it a most desirable addition to our agricultural literature, and 

 a distinct advance over previous treatises on the same subject, not only for 

 popular use, but also for students and specialists, who will find many new and 

 useful suggestions therein." E. W. HILOARD, 



Director of Agricultural Experiment Station, 

 Berkeley, Cal. 



THE FERTILITY OF THE LAND: A Summary 



Sketch of 



the Relationship of Fapm-Praetiee to the Maintaining 

 and Increasing of the Productivity of the Soil. By 



I. P. ROBERTS, Director of the College of Agriculture, Cornell 

 University. 440 pages; fully illustrated. $1.25 



