[ 2 7 I ] . 
are any certain power of numbers increafing in arith- 
metical proportion. But it is needlefs particularly to 
inlift upon thefe, becaufe one inftance is fufficient to 
fhew that thofe methods are not to be depended 
upon, from which a conclufion follows that is not 
exadl. 
XLIV. An Account of the InfeSl called the 
Vegetable Fly : by William Watfon 
F. R. S. 
To the Royal Society. 
Gentlemen, 
Read Nov. 24, / ■ ^HE beginning of laft month, I re- 
>7 6 3- ceived a letter from our learned and 
ingenious mem ber Dr. Huxham of Plymouth in which 
among other things he informed me, that he lately had, 
by permiflionof commiffioner Rogers, obtained a fight 
of what is called the vegetable fly, with the following 
defcription of it ; both which he had from Mr. New- 
man, an officer of general Duroure’s regiment, who 
came from the ifiand Dominica. As this delcription 
feemed to the dodtor exceedingly curious, he has fent 
it me, exa&ly tranfcribed from Mr. Newman’s ac- 
count, and is as follows. 
“ The vegetable fly is found in the ifland Dominica, 
“ and (excepting that it has no wings) refembles the 
“ drone both in fize and colour more than any other 
tc Englilh infedt. In the month of May it buries itfelf 
“ in 
