' It is quite natural to start with the apple in the consideration, and with 

 the light-coloured anthracnose, known as the Ripe Rot (Gloeosporium fructi- 

 genum, Berk.). Up to this time the only other fruit upon which this fungus 

 was known to grow is the grape, the Division of Pathology of the Department 

 of Agriculture having recently established this fact. It was an easy matter 

 to verify this work, but of more interest to find that when the virus was 

 transferred to the flesh of the peach it quickly developed in a vigorous way, 

 and produced a similar patch 'of decay not identical in appearance because of a 

 difference in texture of the host, but the spore masses and spores were the same. 



" In like manner it was taken to the pear and the quince, so that the same 

 ripe rot fungus produces its destructive work upon the three sorts of fruit of 

 the apple class. 



" Turning now to the tomato group, the chart shows that the dotted lines 

 run to each of these namely, the pepper, egg-plant, and the tomato. Noting 

 the arrows in this connection, it will be seen that the native Gloeosporium of 

 the pepper and of the tomato, supposed to be different species and distinct 

 from the one upon the apple, were cultivated upon the latter fruit, where 

 each produced the ripe rot of the apple. Following the oval around to the 

 right, beginning with the apple, it will be seen that, besides those fruits 

 already mentioned, the arrows point to the banana, bean, and lemon, all fruits 

 representing widely different groups of plants. 



" No attempts were made to cultivate any of the peach fungi upon the other 

 fruits. The banana has received three besides the one from the apple, two of 

 which are pink namely, from pepper and tomato ; and a black one, repre- 

 sented by the solid line, from the pear. Much work is now under way with 

 the banana. 



" The pepper has given its pink anthracnose to six namely, the banana, 

 pear, persimmon, apple, grape, and bean. The dark species has been received 

 from the egg-plant and the bean. 



" In connection with the bean, the dark lines are most abundant, showing 

 that here the genus Colletotrichum is quite at home. It sends this to pepper, 

 pear, egg-plant, citron, and persimmon, and receives the same from the egg ? 

 plant only in this case an even exchange. The pink cotnes from pepper, 

 apple, and tomato. 



" The persimmon has only been used as a recipient, and not experimented 

 with largely. The apple and pepper Gloeosporium thrives upon it, and the 

 bean Colletotrichum. Only a little work has been finished with the lemon, it 

 having received thus far from only apple and the pear, but the two fungi are 

 not in the same genus. 



" The watermelon has not been inoculated with anything, but its* 

 anthracnose has been carried to the squash and the citron. 



" Upon the quince the apple and grape Gloeosporium has been grown in. 

 other words, the ripe-rot is doubly proved to thrive upon the quince. The 

 citron has only dark lines coming from the bean, melon, and pear, and sends 

 out its own to the squash. 



" From the grape has given out light lines to quince and egg-plant, and 

 similar lines run to it from apple, pepper, and tomato. One solid line runs 

 to it namely, from the pear. 



" The tomato exchanges the pink-rot with the apple, sends it also to banana, 

 bean, grape, egg-plant, and pear. It receives the dark lines from the pear. 



" From the egg-plant goes out dark rot to pepper, and an exchange is made 

 to the bean. It also receives the pink rot from apple, grape, and tomato. 



* See Plate opposite p. 26. 



