Wild Grapes 



There are a good many species of wild grapes, and 



Mr. Burbank has utilized several of these in his experiments. 



His chiej work with this species has been done, however, with the 



common European cultivated grape, which has developed a large 



number oj varieties through being selected Jor various purposes 



during past centuries. In particular some oj his most 



important new varieties are descended Jrom a "bud 



sport," that is, a variation that appeared 



"spontaneously" in a branch growing 



on an ordinary grape vine. 



