150 AMERICAN GEAPE GROWING 



Southern natives. That the northern limit of the South- 

 ern cestivalis is governed by the isothermal line beyond 

 which it is killed by the cold of winter. 



That the Northern cestivalis will flourish still further 

 north, because it endures a lower temperature, but will 

 give poor results in the extreme South, yet will do well in 

 the northern portion of the Southern cestivalis belt. 



That the Labruscas belong still north of the Northern 

 cestivalis, but will thrive in the northern portion of the 

 Northern cestivalis belt, while below that region it will 

 appear successful for a time, but decline after two or 

 three crops. 



That the cordifolia will succeed in both the Labrusca 

 and Northern cestivalis belt, but will fail in the southern 

 portion of the Southern cestivalis belt. 



That these families of grapes will give first class success 

 only in their climatic bounds, not because of any one 

 peculiar feature in their growth, but because of their 

 construction throughout the various parts of their being. 



And finally, that these families of grapes must (with 

 allowances to be made for different degrees of humidity) 

 become the grapes for the whole world. 



I will qualify the above by placing the rotundifolia in 

 the southern part of the Southern cestivalis belt. 



I believe that if your experience and my own were upon 

 the same ground, we should agree throughout. I am 

 aware that this is rank heresy, or would be treated as such 

 by the old school of horticulturist. Very good, they are 

 my convictions. If you bring this thing befere the pun- 

 lie, or if I should do so myself (as I have thought I would 

 do), it will encounter a storm. But men like Bush, 

 Jaeger, and I will add, Prof. Krausse, of Waco, Texas, 

 and other unpretending students will grant a friendly re- 

 ception, and time will confirm the matter. I am fight- 

 ing upon that line myself, and am glad to find another, 

 and I may add, many others, upon the -same side. 



