RESISTANCE TO COLD, HEAT, ETC., IN GRAPES. 67 



beyond its province, as from what is said, any one acquainted 

 with grape species and their native habitats can readily select 

 the resistant kinds in each case. 



The President The subject is now before the Conference for any 

 discussion you may have upon it. 



Mr, Von Herf With regard to heat and cold, I experimented for 

 nearly ten years with about 350 varieties, and they stood the winter very 

 well, with the exception of one variety, which was very tender, which was 

 the plant we got from the White House in Washington and which seemed 

 to be quite tropical in its nature. Now, as to the resistance of vinifera, 

 we had no trouble, because it was sandy soil, and they were mostly grassed 

 and some got their growth. I believe if we could suppress the black 

 rot on vinifera, they would grow just as well. They require more careful 

 treatment and better fertilizing, and more care, but they will grow. There 

 is no trouble about that. It is only the black rot which makes it impossible 

 to raise fruit. We got vines from nurseries for a year or two, but the 

 trouble got worse every year until we found it practically impossible to 

 continue although there . is a little difference in the different varieties, 

 but we cannot even raise Niagara after the vines have reached some age. 

 That is, after they are some three or five years old. The Niagara, I am 

 told, has the vinifera in it. I think we produced vinifera from seeds, 

 the vinifera vine from seeds coming up from Niagara grape seeds, so I 

 think it is shown it has vinifera in it. 



The President Dr. Hansen has a paper which he will read entitled, 

 "Is Acclimatization an impossibility?" 



