226 Mr. Marsuam’s further Obfervations on the Wheat Infed: 
that I have not had any fuccefs in difcovering the perfect ftate of 
this infect: however, I will relate exactly what has happened. 
“ T inclofed feveral ears of wheat, containing a number of the . 
{mall yellow larve, in a flower-pot, clofely ftopped at the bottom, 
and covered with gauze at the top; and have at different times found 
dead, at the bottom of the pot, two different forts of very {mall flies, 
one of which was a fhort thick black fly, with very long tranfparent 
wings, and long flender {mooth antenna, of which I have fent two 
rude figures fomewhat magnified, fee Tab. xix. No. vi. fig. 1. a 
and b. The other fly was as minute, if not lefs, with a yellow 
body, {potted and tranfparent wings, and long jointed antennz, befet 
with {mall hairs or briftles at each joint, at leaft fothey appeared to 
me through a magnifying glafs; but that you may, if you pleafe, 
examine them yourfelf, I have fent two along with the others, being 
all that I found of that kind, though I fear they are not in a good 
{tate ; and I have alfo inclofed fuch figures as I was able to make of 
. them, fee Tab. xix. No. vi. fig. 2, aand b. To your learned friend’s 
queftion as to the quantity of mifchief done by this. unknown fly, I 
fear { cannot give a fatisfactory anfwer: I certainly think his average 
of two grains in each ear deftrayed by this infect not too great, for I 
fcarcely examined any ears in which there were not more than that 
injured. But, after all, are not our fears with refpect to the injury 
that the wheat has received from this infect greater than they 
ought to be? and does not the wheat fuffer as much from infects 
or fome other caufe every year, even in thofe years that are moft 
produstive ? 
“ By what I can learn from enquiries, and from my:own obferva- 
tion, there is a good crop of wheat inthis neighbourhood: one farmer, 
who has begun to threfh out his wheat, has found it yield well; 
and when in my own field I had the curiofity to rub out a few ears, 
and 
