METCALF: WHITE PINE BLISTER RUST 533 
on account of the great number of species represented, and the widely 
various parts of the earth from which such stock comes. No section 
of the country is likely to suffer more from this source than Long 
Island and the general vicinity of New York City. May I express 
the hope that this Botanic Garden, already a leader in local and 
national sentiment in horticultural and botanical affairs, will take a 
position in this matter which will help to bring about the suppression 
of this very dangerous traffic? 
EXPLANATION OF PLATES VI AND VII 
PLATE VI. A native white pine (Pinus strobus) in thick stand, completely girdled 
by a blister rust canker. Kittery Point, Me. (Photograph by Mr. W. S. Carpenter, 
of the New York State Conservation Commission.) 
PLATE VII. A young native white pine (Pinus strobus), completely girdled and 
showing several infections of blister rust on trunk and branches. Kittery Point, Me. 
(Photograph by Mr. W. S. Carpenter, of the New York State Conservation Com- 
mission. ) 
