82 THE PEARS OF NEW VORK 



blight, the disease would extend down young branches as much as from 

 twelve to eighteen inches, and in one case as much as two feet. Seventy- 

 seven inoculations were made into the trunks of two-year-old trees. All 

 but seven of them failed to develop the disease. In the successful infec- 

 tions, only small superficial cankers were produced. In these cankers 

 a new cambium would readily form, and the entire wound would heal over 

 perfectly in a short time. 



" The origin of this species, or type, is still a matter of dispute. It 

 has been confused with Pyriis pashia of northern India, from which species 

 it is very distinct. Pyriis variolosa produces medium sized, pear-shaped 

 fruits, which have a persistent calyx. It is possible that this is not a dis- 

 tinct species, but a hybrid. If this should prove to be the case, it probably 

 will not come true to type from seeds. This matter will be determined 

 by a study of the seedlings of this type. If this does not come true to type 

 from seeds, the seedlings may be of little value for root stocks. If this 

 should prove to be the case, it will, nevertheless, be of value as a stock for 

 top-working, when propagated by budding or grafting on some other root 

 system." 



