ILLUSTRATIONS 



PLATES. 



Page. 

 Platk I. Apples badly affected with bitter-rot on the same twig with mum- 

 mies of the preceding year's crop Frontispiece. 



II. The microscopic characters of the bitter-rot fungus in various stages. 36 



III. Fig. 1. — Crop of apples from one tree of Plot 3, sprayed seven times. 



Fig. 2.— Crop from an unsprayed tree ( Check A ) 36 



IV. Fig. 1. — Apples harvested from one tree of Plot 6, sprayed ten times. 



Fig. 2. — Crop from an unsprayed tree ( Check D ) 36 



Y. Fig. 1. — Apples harvested from one tree of Plot 1, sprayed three 



times; applications made too early. Fig. 2. — Crop of apples from 



one tree of Plot 12, sprayed four times; applications made too late. . 36 



VI. Fig. 1.— A Yellow Newtown apple badly affected with bitter-rot, and 



another recently mummified by the fungus. Fig. 2. — The crop 



from one tree of Plot 16, sprayed four times at the right period 36 



YII. An untreated apple tree (Check A), with the bulk of its crop on the 



ground at jjicking time 36 



VIII. Fig. 1.— Platform and equipment for making Bordeaux mixture. 



Fig. 2.— The spraying outfit in operation 36 



TEXT FKiURE. 



Fig. 1. Plat of the block of trees used in the experiment 18 



6 



