290 SUCCESS ivrrn small fruits. 



eventually banish the famous Hudson River r\nt\verp from 

 cultivation. As yet, no remedy has been found for it that 

 I am aware of. I believe it to be contagious, and would 

 advise that the plants be dug out and burned immediately, 

 and that plantations of strong, healthy plants be made on 

 new land that has never been in raspberries. I also sug- 

 gest the free use of wood-ashes and well-decayed compost. 

 As far as my experience goes, this disease is confined to for- 

 eign varieties, and almost wholly, as yet, to the Antwerps. 



Mr. Fuller, in the paper already named, describes a dis- 

 ease among blackberries that resembles the raspberry curl- 

 leaf so closely that it may be identical, and spring from the 

 same cause. 



*' Some ten years ago, the cultivators of the blackberry in va- 

 rious parts of New Jersey noticed that the ends of the young, 

 growing canes, in summer, would occasionally curl, twist about, 

 and often assume a singular, fasciated form, resulting in an en- 

 tire check to their growth. The leaves on these infested shoots 

 did not die and fall off, but merely curled up, sometimes assum- 

 ing a deeper green than the healthy leaves on the same stalk. 

 At the approach of winter, the infested leaves remained firmly 

 attached to the diseased stems : and all through the cold weather, 

 and far into the spring, these leaf-laden and diseased stems were 

 a conspicuous object in many of the blackberry plantations of 

 this State. 



" If the infested shoots are examined in summer, thousands 

 cf minute insects, of a pale yellow color, and covered with a 

 powdery exudation, will be found sucking the juices of the suc- 

 culent stem and leaves, causing the crimping, curling, and twist- 

 ing of tliese parts as described. 



'* This parasite resembles somewhat an ordinary green-fly 

 {Aphis) or plant louse ; but, according to the observations of 

 Professor Riley, it belongs to the closely allied Flea-lice family 

 {PsyllidcE\ distinguished from the plant-lice by a different vein- 

 ing of the wings, and by the antennae being knobbed at the tip, 



