336 EXPERIMENT STATION— BULLETINS. 



in summer, as well as to the increased size of their fruit, there would seem 

 to be good reason to suspect an admixture of foreign blood. 



The plantation also includes the following varieties of foreign origin, 

 viz.: Auburn, Early Orange, Industry, and Dougall's No. 10. We regret 

 to say that, although all except the last have shown more or less perfect 

 fruit, they appear to be alike amenable to the attacks of their potent enemy, 

 mildew, the last especially so. 



The currant span-worm attacked the gooseberry also, and yielded readily 

 to the same insecticide. 



, RASPBERRIES (Rubus). 



VARIETIES OF ID^US AND STRIGOSUS AND SUPPOSED HYBRIDS, INCREASING BY 



SUCKERS FROM THE ROOTS. 



Although usually considered less hardy than the cap varieties, these 

 seem generally to have come through the last winter with little apparent 

 injury, excepting only such tender varieties as Brinckle, Herstine, and 

 possibly a few others, supposed to be mostly or wholly of Idee us parentage. 



The spring and early summer here were generally wet and cool, and 

 therefore favorable to the development of fruit, so far as size and quantity 

 are concerned. The weather more recently has been hot and dry. This 

 change seems to have resulted in the development of several forms of 

 fungus. Of these, Anthracnose, or Kaspberry Cane Bust, Glceosporium 

 venetum Speg., has been more or less common, and has in some cases 

 seriously checked the growth of the new canes. 



Quite recently a profuse powdery mildew has, to some extent, attacked 

 the foliage of the Turner raspberry, with the result of checking its develop- 

 ment when at scarcely more than half its normal size, although not, 

 apparently, injuring its tissues ; the result being, however, to check, if not 

 wholly arrest, the growth of the shoot. 



Insects have been but slightly troublesome to the raspberry. Early in 

 the season the girdling and ovipositing of the raspberry cane borer, Oberea 

 bimaculata Oliv., was occasionally observed ; but this can scarcely be con- 

 sidered an injury, since the attacks were very rare, while the result usually 

 was the shortening of the cane, followed by branching, and a consequently 

 increased amount of bearing wood for the ensuing year's crop. The sub- 

 sequent operations of the larvae may be readily prevented by the prompt 

 removal and destruction of the girdled portion of the cane, including the 

 egg deposited therein. The wilting and drooping of the tips of the injured 

 canes render their detection an easy matter. 



The following embrace the most desirable or promising of those included 

 in the tabulated list, arranged, as nearly as practicable, in the order in 

 which they ripen : 



Hansell is usually the earliest variety to ripen. Although the fruits are 

 neither large nor of high quality, nor yet is the plant vigorous, still it is 

 worthy of being planted, on a limited scale, on account of its extreme 

 earliness. 



