[ 35 ° ] , 
ahfwer every purpofe that could be wilhed, without 
any poffible rifle of hurting the blofioms or fruit. 
3d. What the farmers call the yellows in wheat, 
and which they confider as a kind of mildew, is 
in fa£t, as I have no doubt but you well know, 
occafioned by a fmall yellow fly with blue wings, 
about the fize of a gnat. This blows in the ear of 
the corn, and produces a worm, aimoft invifible to 
the naked eye $ but being feen through a pocket 
microfcope, it appears a large yellow maggot of the 
colour and glofs of amber, and is fo prolific that I 
lad week diftindtly counted 41 living yellow mag- 
gots or infedts, in the hufk of one Angle grain of 
wheat, a number fufficient to eat up and deftroy 
the corn in a whole ear. I intended to have tryed 
• the following experiment fooner; but the dry hot 
’ weather bringing on the corn fafter than was ex- 
pedited, it was got and getting into fine blofibms 
ere I had an opportunity of ordering as I did j 
but however the next morning at daybreak, two 
fervants took two bufhes of elder, and went one 
on each fide of the ridge from end to end, and fo 
back again, drawing the elder over the ears of corn 
of fuch fields as were not too far advanced in blof- 
loming. I conceived, that the difagreeable effluvia 
of the elder would effedtually prevent thofe flies from 
pitching their tents in fo noxious a fituation ; nor 
was I difappointed, for I am firmly perfuaded that 
no flies pitched or blowed on the corn after it had 
been fo ftruck. But I had the mortification of ob- 
ferving the flies (the evening before it was flruck) 
. already on the corn (fix, feven or eight, on a Angle 
t . ear) fo that what damage hath accrued, was done 
before 
