54 Of Flies* 
be found upon the leaves of filberd-trees, with this dif¬ 
ference,, the former being green, and the latter white. 
Upon the leaves of apples and other trees, are found a 
curious fly m , the exquifite make and form of its parts are 
not to be difcerned without a microfeope. Fig. 91. repre¬ 
fen ts the fize and fhape it appears of to the naked eye, 
and fig. 92. a part of its head, whereof A B are its 
two protuberant eyes, C D E its fnout, furnifhed with 
various forceps or teeth, with which it perforates the 
buds of fruit and flowers; this fnout is flexible and capable 
of bending every way, C F and D G are the two horns 
which adorn the fnout. Fig. 93. is almoft a fourth,part 
of the leg of this fly, which confifts of four joints. H J 
are two nails which appear in the microfeope, as horn- 
does to the naked eye, and K L fhews its two fkinny 
palms or foies. 
There is another fort of animalcula found in the 
wrinkles and wreathed curls of blighted leaves n , and in 
the extremity of the fprouts of leaves, as in garden cur¬ 
rants, cherries, peaches, ne£farines,’&c. may be found 
great fwarms of thefe minute infe&s, no bigger than an 
half-grown loufe, one of which is reprefented by fig. 94. 
of its full growth, and of the fize it appeared of to the 
naked eye. Fig. 95. fhews the fame magnified and near 
its laffc change, the folded wing juft beginning to appear 
at A B. It had fix fmall jointed feet, fenced with fhort 
hairs, and two nails on each; C fhews one of its eyes, 
which was of a furprizing make. D F reprefents the 
probofeis, with which it perforates the leaves and buds 
of trees, and then thrufts out its Dart E and fucks 
their juice. From its tail proceeds two upright parts 
G H, out of which a tranfparent liquor is frequently 
diffufed 
jn Leeuwenhoek Ex. 8 c Con. Epift. 89. ^ Leeuwenhoek 
1$. & Con. Eplft, 90. 
