A Selection of Macmillan & Co.’s 
Works on Agriculture 
TEXT-BOOK OF TROPICAL AGRICULTURE. By 
H. A. A. Nicholls, M.D., F.L.S. Crown 8vo. 6s. 
INTRODUCTION TO THE STUDY OF AGRICUL- 
TURAL ECONOMICS. By H. C. Taylor, Ph.D. Crown 8vo. 
5s. 6d. net. 
CYCLOPAEDIA OF AMERICAN AGRICULTURE. 
Edited by L. H. Bailey. In Four Vols. 8vo. Vol. I. 
Farms : Regions, Soils, Farm Plans, Atmosphere. Vol. II. 
Crops. Vol. III. Animals. Vol. IV. Farm and Community. 
2 IS. net each. 
SOUTHERN (AMERICAN) AGRICULTURE. By 
F. S. Earle. Crown 8vo. 5s. 6d. net. 
THE SOIL : Its Nature, Relations, and Fundamental 
Principles of Management. By Prof. F. H. King. Crown 8vo. 
6s. 6d. net. 
IRRIGATION AND DRAINAGE. Principles and 
Practice of their Cultural Phases. By Prof. F. H. King. 
Crown 8yo. 6s. 6d. net. 
THE PRINCIPLES OF SOIL MANAGEMENT. By 
Prof. T. Lyttleton Lyon and Prof. Elmer O. Fippin. 
Crown 8vo. 7s. 6d. net. 
THE FERTILITY OF THE LAND. By Isaac 
Phillips Roberts. Crown 8vo. 6s. 6d. net. 
DRY-FARMING. A System of Agriculture for Countries 
under a Low Rainfall. By John A. Widtsoe, Ph.D. 
Crown 8vo. 6s. 6d. net. 
MACMILLAN AND CO., Ltd., LONDON. 
