The Rural Science Series. 
Edited by Pror. L. H. BaILey. 
IN THE PRESS. 
THE. APPLE, 
By L. H. BAILEY. 
The work is tocomprise two parts—the first treating of all the practica: 
matters of apple-growing, and the second of such scientific matters as the 
botany of the apple, its history and evolution, production of new varieties, 
and the like. It is expected that the work will be completed and ready for 
publication in the fall 
MILK AND ITS PRODUCTS. 
By H. H. WING. 
THE FERTILITY OF THE LAND. 
By I. P. ROBERTS. 
Other volumes in the sertes to follow are: 
Physiology of Plants. By J.C. ARTHUR, of Purdue University. 
Grasses. By W. H. BREWER, of Yale University. 
Bush Fruits. By F. W. Carp, of University of Nebraska. 
Plant Diseases. By B. T. Gattoway, E. F. Smits, and A. F. 
Woods, of the United States Department of Agriculture. 
Seeds and Seed Growing. By G. H. Hicks, of the United States 
Department of Agriculture. 
Leguminous Plants. By E. W. Hincarp, of the University of 
California. 
Feeding of Animals. By W. H. Jordan, of Maine Experiment 
Station. 
Irrigation. By F. H. Kine, of the University of Wisconsin. 
IN PREPARATION. 
EVOLUTION OF OUR NATIVE FRUITS. 
By L. H. BAILEY. 
THE MACMILLAN COMPANY. 
66 Fifth Avenue, NEW YORK. 
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