3i6 December 1748. 



in North America ; fome are peculiar to that 

 country, others are common to Europe likewife. 



I HAVE already mentioned the Mofquitoes as a 

 kind of difagreeable gnats ; and another noxious 

 infeft, the Erttchus Fiji, which deilroys whole 

 fields with peafe. I {hall here add fome more. 



THERE are a kind of L,ocufts> which, about 

 every feventeenth year, come hither in incredible 

 numbers. They come out of the ground in the 

 middle of May* and make, for fix weeks toge- 

 ther, fuch a noife in the trees and woods, that 

 two perfons who meet in fuch places, cannot 

 under/land each other, unlefs they fpeak louder 

 than the locufts can chirp. During that time, 

 they make, with the fting in their tail, holes in- 

 to the foft bark of the little branches on the 

 trees, by which means thefe branches are ruined. 

 They do no other harm to the trees or other 

 plants. In the interval, between the years when 

 they are fo numerous, they are only feen or heard 

 fingle in the woods. 



THERE is likewife a kind of Caterpillars in 

 thefe provinces, which eat the leaves from the 

 trees. They are alfo innumerable in fome years, 

 In the intervals there are but few of them : but 

 when they come, they ftrip the trees fo entirely 

 of their leaves, that the woods in the middle of 

 fummer are as naked as in winter. They eat all 

 kinds of leaves, and very few trees are left un- 

 touched by them. As, about that time of the year, 

 the heat is moft exceffive, the ftripping the 

 trees of their leaves has this fatal confequence, 

 that they cannot withftand the heat, but dry up 

 entirely. In this manner, great forefts are fome- 

 times entirely ruined. The Swedes, who live 



here, 



