[ 4-55 3 
to Hell, in the Poets, rolling a great Stone to the 
Top of a high Hill, which no fooncr w 7 as at the 
Summit, but it dipt down again. 
The Naturalifts will have us admire the Strength 
of the Ants, in tranfporting their Materials : That 
of the Formica-Leo is doubtlefs no lefs worthy of 
the Attention of all who fhall fee, as 1 have done, 
thefe little Animals carry to the Brink of their Pit, 
notwithftanding the Steepnefs of the Slope, and the 
Crumbling away of the Earth, Stones Three or Four 
times as big as themfelves. 
II. All the Formica-Leos that have been hitherto 
obferved, move only backwards; but I have alfo 
difeovered a Species that move forwards with A6tB 
vity. Thefe do not, like the others, lie in Ambufh 
for their Prey, but feize on it by mere Force and 
Dexterity. 
Of the Pucerons, oy Vine-Grubs. 
I. The Fucerons are pretty well known, fo that 
it will be fufficient to take notice they are that fort 
of Gnats , or frnall Flies , which flick in great Num- 
bers to the Leaves and Stalks of Plants, and caufe 
great Deftruftion among them. What they prefent 
moft curious, and which hitherto has been a fort of 
^Enigma, is their way of multiplying. “ In every 
“ Family of the Fucerons , fays M. Reaumur *, 
“ there are fome with Wings, and others without. 
“ According to the ufual Analogy, the winged ones 
* Memoires fur leslnfe ties, Tom. Ill, in the Preface, pag. 15. 
P p p “ fhould 
