THE MONTHLY BULLETIN. 



505 



THE NATURAL MODES OF DISTRIBUTION OF PEAR 



BLIGHT IN CALIFORNIA. 



By B. J. Jones,* Maxwell, California. 



When the campai<]rn afrainst pear blifrht was carried on by the experi- 

 ment station, under a state apjjropriation made for that purpose, the 

 wide distribution and virulence of the disease necessitated immediate 



Pig. 116. — Pear tree treated for pear blight. Showing removal of bark as well as 

 many of the larger limbs. (After Gammon, Monthly Bui. Cal. Hort. Com.) 



demonstration work. This was done after the method introduced by 

 Prof. Waite of the Department of Agriculture, which was then and still 

 is the only practical way of handling thi.s di.sease. 



♦Address before the State Fruit Growers' Convention, June 1-6, 1914. 



