The pear sends its C olletotrichum to banana, lemon, citron, grape, and pepper, 

 and receives the same group from the bean. The pink rot comes from the 

 apple, pepper, and tomato. No attempt has been made to send anything out 

 from the squash, and it has received the dark decay from the melon and 

 citron. It is, perhaps, too early in the work to draw conclusions, and the 

 facts in themselves may warrant their being stated without further remark." 



C 1. Pear 



2. Egg-plant 



3. Tomato 



4. Pepper 



5. Grape 



6. Quince 



7. Lemon 



8 Persimmon 

 9. Bean 

 10. Banana 



Ripe rot or 

 Gloeosporium 



of Apple 

 will grow on 



Ripe rot or 



Gloeosporium 



of Pear 



rl. Tomato 

 I 2. Grape 

 I 3. Citron 

 j 4. Lemon 



will grow on j 5. Bean 



L6. Banana. 



- 



111. Peach. 



Ripe rot or 

 Gloeosporium 



of Tomato 

 will grow on 



(1. Apple 



Ripe rot or j 2. Pear 



Gloeosporium \ 3. Bean 



of Pepper j 4. Grape 



will grow on ] 5. Banana 



16. Persimmon. 



1 . Egg-plant 



2. Pear 



3. Apple 



4. Quince 



5. Banana 



6. Bean 



I 7. Grape. 



On glancing at the above table one is immediately struck with the 

 great variety of orders represented by the possible hosts of any given 

 form of Gloeosporium. In a similar manner the forms of Colletotri- 

 chum, a so-called genus related to Gloeosporium, were found to be 

 more or less indifferent to the botanical order of their host plant. 



( Citron 

 i Pepper 



Colletotrichum of Bean* -j Egg-plant 

 | Persimmon 

 I Pear. 



Colletotrichum of Egg-plant j gg| 



Colletotrichum of Citron 



Squash. 



Colletotrichum of Melon* Squash. 



The following table may stand as a striking example of the great 

 variety of fruits that a single species of this genus may infest. It is 

 a compilation from various authoritative sources, those marked with 

 an asterisk having been proved or verified by the author : 



LIST of fruits on which it has been experimentally proved that the ripe-rot fungus of 



the apple will thrive : 



fl. *Quince 10. *Tomato 



2. *Pear 11. Egg-plant 



3. * Peach 12. *Pepper 



4. *Plum 13. Persimmon 



5. *Nectarine 14. Bean 



6. *Cherry 15. *Banana. 



7. *Grape 16. *Hawthorne. 



8. *Mango 17. *Guava 

 .9. Lemon 



From time to time for a number of years past I have continued to 

 experimentally test the powers of the ripe-rot fungi of a number 

 of fruits to produce rot in other kinds of fruit and other kinds of 

 vegetation. Before proceeding to examine some extracts from notes 

 on these experiments, it may be well to pause a moment to consider 

 certain general observations. 



Gloeosporium of 



the apple will 



thrive on 



* See Plate opposite p. 26. 



