C 1 
“ fiiould be the Males, and thofe without Wings 
“ the Females: But what is a great Singularity in 
“ the Hiftory of Infects, is, that here both Sorts are 
“ Females. I have not been able to find out the 
st Males who impregnate both the one and the other 
“ fort. They all bring forth alive, ” Is there 
therefore no Copulation among Rucerons? Or are 
*they Hermaphrodites like Mufcles? In order to 
know this, I tried an Experiment propofed by M.‘ 
Reaumur •f. I brought up, in perfect Solitude, a 
Ruceron from the very Inftant of its Birth. The 
Expedient 1 had recourfe to for this, was different 
from that which M. Reaumur had pointed out. It 
was fuch as gave me a Facility of obferving the little 
Ruceron at any time, without Fear of letting in 
another. I conftantly watched it from Day to Day, 
and from Hour to Hour, for above a Month, ufually 
beginning my Obfervations about Four or Five in the 
Morning, and fcarcely difeontinuing them till to- 
wards Nine or Ten at Night. I took care to keep 
an exa£t Journal of its Life, wherein 1 noted even its 
lead Motions, and the mod trifling Circumftances. 
At the End of about 12 Days it began to breed, and 
has fince brought forth 95 young ones, all alive, and 
moft of them under my own Eyes. I have drawn 
up a Table, in which I have marked, with the greateft 
Exadtnefs poflible, the Day and the Hour when every 
one of them was brought forth. 
I have already repeated this Experiment, Three 
fevcral times, and with equal Succefs. I have even 
brought 
t Pag. 329. 
