Permanency Desired.--The expense of underdrainage demands care in every detail of the work. The grade of the trenches should be carefully tested. Every piece of tile should be examined. The outlet should be guarded against displacement or entrance by animals. A good plan is to lay the last few pieces of tile in a close-fitting wooden box, and to protect the end with iron rods placed 2 inches apart. If the drain is on a true grade, so that no silt will collect, there need be no fear concerning its continued efficiency, provided water does not run in it all the time. If it carries the water from springs continuously, plant-roots may fill it, and tree roots are quite sure to do so when opportunity offers. This is notably true in case of elms and willows, but protection is afforded in such an instance by closing the joints with cement. [Illustration: The lure of the country.] _The following pages contain advertisements of books on kindred subjects_ NEW FARM AND GARDEN BOOKS Injurious Insects: How to Recognize and Control Them By W. C. O'KANE Entomologist of the New Hampshire Agricultural Experiment Station, and Professor of Economic Entomology in New Hampshire College _Illustrated. Cloth, 12mo. $2.00 net._ Complete information on the characteristics, life histories and means of control of the more common injurious insects, including those infesting field crops, vegetables, fruits, the principal pests of domestic animals, stored products and the household, is contained in this book. A distinctive feature of the work is the illustrations with which the text throughout is accompanied. These have been made especially for Dr. O'Kane. With each insect treated he shows in an original photograph the characteristic injurious stage or the typical work of the insect where that is characteristic. By this means the author hopes that the layman will be able to recognize an insect that threatens by the picture aside from any description in the text. Principles of Fruit Growing By Professor L. H. BAILEY _New edition. Cloth, 12mo. $1.50 net._ Since the original publication of this book, in 1897, it has gone through many editions. The progress of fruit growing in the meantime has been very marked and it has been necessary to completely rewrite the work. The present issue of it brings the accounts of the new practices and discoveries as they relate to fruit growing up to date. All of the text and practically all of the illustrations are new. THE MACMILLAN COMPANY PUBLISHERS 64-66 Fifth Avenue NEW YORK NEW FARM AND GARDEN BOOKS Sheep Farming By JOHN A. CRAIG and F. R. MARSHALL _Illustrated. Cloth, 12mo. $1.50 net._