[ 97 ] 
the infers in hot vinegar, as it is done in Mexico; and 
now I fhall attempt to dye fome woolly threads in 
the common way of the fcarlet dyers. In the mi- 
crofcopical obfervations of Ledermuller at Nurem- 
berg* you will find tolerable drawings belonging td 
this matter. In the beginning of Augurt, 1 found 
an extremely fmall white fly, fomewhat like to what 
is fuppofed to be the male infedl. It is a third part 
of the fize of what is reprefented by Ledermuller. 
It has a body like a gnat, fnow- white, powdered below* 
but gray Ihining upon its back, fix tender fnow-white 
legs without claws, a thick bulky head, two very 
fmall prominent eyes, two hair-like horns, two wings, 
large enough in comparifon to the body, fnow-white 
below, and fhining gray above. The belly to the 
tail is taper, and at the tail are three white hairs, very 
tender, and four or five times the length of the whole 
fly. But as this was the Angle one amongfl: three 
hundred, and totally unlike in every part to the other 
infedts, I doubt very much of its being of this genus. 
I hope next fummer will teach me more ; and, if I 
fhould be happy enough to bring the matter to any 
clearnefs, I fhall put my obfervations into fome order, 
and fend them over with proper drawings belonging 
to it. But as there is no doubt but this infedt will 
be found as well in England as in Poland, I thought 
it proper to give you the account of my obfervations 
as far as they go. Perhaps fomebody of yours will 
think it worth their while to look the next month of 
June at the potentilla, fragaria, and polygonum minus 
roots, and will very likely find thefe fame things. 
Tab. X. N°. i. The cochineal infedl of its natural 
fize. 2. The fame magnified. 3. The cotton. 4. 
Vo l. LIV. O The 
