ROSE LOUSE. 
337 
all that day in the easterly quarter. They were 
observed at the same time in great clouds about 
Farnham, and all along the vale from Farnham to 
Alton.” 
The hop-grounds frequently suffer most severely 
by these insects. In 179-3 they greatly damaged 
the hops, and in 1 79 s caused the crop entirely to 
fail. In the year 1794, which was remarkable for 
a dry summer, the aphides attacked the peas and 
beans, while the hops completely escaped. Thus it 
is uncertain upon what plants they will commit their 
depredations, as potatoes and even com have been 
known to suffer from their visits. 
VOL. II. 
z 
