OBSERVATIONS ON INSECTS AND VERMES. 421 



retire. All day they hide in the hedges. As they rise in a 

 cloud they appear like smoke. 



I do not remember to have seen such swarms, except in the 

 fens of the Isle of Ely. They appear most over grass grounds. 

 WHITE. 



APHIDES. 



On the ist August, about half an hour after three in the after- 

 noon, the people of Selborne were surprised by a shower of 

 aphides which fell in these parts. They who were walking in the 

 streets at that time found themselves covered with these insects, 



LIME-TREE APHIS. 

 (Tke lines under the figure show tlu actualize.) 



which settled also on the trees and gardens, and blackened all the 

 vegetables where they alighted. These armies, no doubt, were 

 then in a state of emigration, and shifting their quarters ; and 

 might perhaps come from the great hop-plantations of Kent or 

 Sussex, the wind being that day at north. They were observed 

 at the same time at Farnham, and all along the vale to Alton. 

 WHITE. 



ANTS. 

 August 23rd. Ever)' ant-hill about this time is a strange hurry 



