376 CONNECTICUT EXPERIMENT STATION REPORT, IQI2. 



blight Mr. Corning writes: "Of my Japanese trees a great 

 many will have to be cut down. At the same ratio of progress, 

 none will be left in three years." And in another letter he 

 states further, in answer to our inquiry: "I bought in New 

 Jersey cions for four kinds, namely, Japanese, Numbo, Ridgely 

 and Paragon, all on chestnut sprouts. I bought at the same time 

 trees from seedlings, but they all died before the blight struck 

 us. I find the Japanese stand so far the best. The Paragon 

 are the poorest, although the^ have made the best growth and 

 produced the most chestnuts. I find the infection commences 

 about at the juncture of the grafts on the sprouts, and runs 

 up and down, faster up than down." 



Dr. Robert T. Morris, of Stamford, has experimented more 

 with different varieties than anyone else in the state, so his 

 statement, following a discussion of a paper by Collins (13, 

 p. 43), is of special interest: "In my own orchards I have 

 twenty-six kinds of chestnuts, and have followed them along 

 for the purpose of determining which ones would resist the 

 blight best. I cut out last year [1910] five thousand old 

 American chestnut trees on my property. There is not a tree 

 in all that part of Connecticut, the vicinity of Stamford, that 

 is not blighted, and very few that are not dead. Now, in the 

 midst of this disaster, what was the behavior of my experimental 

 chestnuts of various kinds? It was this. I had about one 

 thousand Coreans that lived up to five years of age, growing in 

 the midst of blighted chestnuts, and none of these blighted. 

 It occurred to me that it might be well to graft these on the 

 stumps of American chestnuts, because these Coreans resisted 

 the blight. But when I grafted them on the sprouts of American 

 stumps, at least 50 per cent, of the Coreans blighted, showing 

 that the pabulum wanted by the Diaporthe seemed to be fur- 

 nished by the American chestnut. I had some chestnuts from 

 North Japan that resisted the blight, and yet these grafted on 

 sprouts from American chestnuts blighted. I had some Chinese 

 chestnuts, and none of those have blighted as yet; and in 

 grafting them, two or three have not been blighted. I have 

 perhaps twenty-four chinquapins, both the Western form and 

 the Eastern, and only one branch of one tree has blighted. Of 

 the Southern Japanese chestnuts, very many are blighted. They 

 are not as resistant as the Northern. I have a good many 



