New Yorx AGRICULTURAL EXPERIMENT STATION. 191 
SCAB. 
(Venturia inaequalis (Cke.) Adeh. Syn. Pusicladium dendriticum 
(Wallr.) Eckl.) 
This arch enemy of the apple has done very little damage. It 
has been reported as occurring to a slight extent in all the counties 
in the district except. Albany, Ulster and Putnam, but only one 
correspondent (Old Chatham, Columbia Co.) reports it trouble- 
some. On June 20 we sought in vain for a single specimen of 
scab in an 80-acre apple orchard at Poughkeepsie. In 1898 this 
orchard suffered severely from scab. At Washingtonville scab 
spots were common on the twigs of the Lady apple, which is 
a variety very susceptible to this form of attack. 
LEAF SPOT. 
(Phyllosticta spp.) 
What a correspondent thought to be leaf spot occurred injuri- 
ously at Schodack Landing, Rensselaer Co. In some orchards 
25 per ct. of the foliage was affected. Upon investigation it was 
found that the so called leaf spot was the work of an insect,® the 
resplendent shield-bearer (Aspidisca splendoriferella). 
The true fungus leaf spot has been much less common than 
scab, but traces of it have occurred at various points in the district. 
No attempt was made to distinguish between the two species. 
TWIG BLIGHT. 
(Bacillus amylovorus (Burr.) DeToni.) 
Rare. A few affected twigs were observed in Albany Co.; and 
three correspondents, one each in Orange, Ulster and Rensselaer 
counties, report its occurrence in small quantity. 

6 On the authority of Mr. F. A. Sirrine, who examined some of the affected 
leaves. 
