18 MANUAL OF AMERICAN GRAPE-GROWING 



ditioiis. The manufacture of unfermented grape-juice is not 

 yet a success in this region for the reasons that Vinifera grapes 

 do not make a good unfermented juice, and American grapes 

 are not grown in sufficient quantities to warrant the estabhsh- 

 ment of grape-juice plants. 



Bioletti gives the extent of the grape-growing industry in 

 Cahfornia as follows : ^ 



"The vineyards of California covered in 1912 about 385,000 

 acres. Of this total, about 180,000 acres were producing wine- 

 grapes. Roughly, 50 per cent of the wine was produced in the 

 great interior valleys, including most of the sweet wines ; 35 

 per cent was produced by the valleys and hillsides of the Coast 

 ranges, including most of the dry wines ; the remaining 15 per 

 cent was produced in Southern California and included both 

 sweet and dry. 



"The raisin-grape vineyards covered about 130,000 acres, 

 of which about 90 per cent were in the San Joaquin Valley, 

 7 per cent in the Sacramento, and 3 per cent in Southern 

 California. 



"The shipping-grape vineyards are reckoned at 75,000 acres, 

 distributed about as follows : 50 per cent in the Sacramento 

 Valley, 40 per cent in San Joaquin, G per cent in Southern 

 California, and 4 per cent in the Coast ranges." 



The Chautauqua grape-belt. 



The Chautauqua grape-belt, lying along the northeastern 

 shore of Lake Erie in New York, Pennsylvania and Ohio, is 

 the second most important grape region in America. The 

 "belt" is a narrow strip of lowland averaging about three miles 

 in width, lying between Lake Erie and a high escarpment which 

 bounds the belt on the south throughout its entire length of 

 a hundred or more miles. Here climate and soil seem to be 



1 Bioletti, Frederic T. Report of International Congress of Viti- 

 culture, 88. 1915. 



