Latest Additions to the 



RURAL TEXTBOOK SERIES 



Edited by Professor L. H. BAILEY 



Director of the New York State School of Agriculture at Cornell University 



Manures and Fertilizers 



By H. J. WHEELER, Ph.D., D.Sc. 



Formerly Director of the Rhode Island Experiment Station 



Illustrated. Cloth, i2mo; preparing 



The clear and unusually full discussion of the practical utilization of 

 manures and fertilizers of all kinds, and of their relations to the plant 

 and to the soil, makes this book not only an excellent text for college 

 students, but also one which will be generally welcomed by all up-to- 

 date agriculturists. All the animal manures, litter, and waste nitroge- 

 nous materials of every sort are discussed. A helpful feature for the 

 student is the extended treatment of the availibility of organic nitro- 

 gen and of the organisms contained in barnyard manure which give 

 rise to the various fermentations taking place therein. The well- 

 known, and also the new, nitrogenous manures such as calcium cyan- 

 amid and calcium nitrate are considered in detail. The chapters de- 

 voted to the potash salts, phosphates, lime, magnesia, soda, gypsum, 

 iron, and manganese are exceptionally complete, and chlorin, sulfur, 

 silica, carbon disulfid, toluene, and other substances exerting catalytic 

 and other effects are described. Much of the material in this book 

 which will be new to students and other readers has suggested itself 

 to the author in the course of twenty-two years of continuous research. 



Animal Husbandry for Schools 



By MERRITT W. HARPER 



Professor of Animal Husbandry in the New York State College 



Illustrated. Cloth, i2mo ; preparing 



This is a simple, concrete presentation of the essential facts concern- 

 ing farm animals, adapted for use in secondary schools. 



THE MACMILLAN COMPANY 



Publishers 64-66 Fifth Avenue New York 



