male from above, the convex side of the plates, e. e. is
presented, and the summit of the angle formed by their origin. When in
the body of the female, they are in the inverse position; what was above
in the male is now below, and the extremity of the pincers directed
upwards. This makes us suspect that in copulation the male mounts on the
back of the female, but we are far from asserting it positively. It may
be asked whether that part we call the penis, is the sole part
introduced into the female during copulation? We have carefully
investigated this, and can affirm, that it is the only one of all those
described by M. de Reaumur, which has been found in our females. But we
have discovered a new part that escaped both him and Swammerdam, which
appears from the following experiment.

Separating the lenticular substance from the excretory canal, where it
was attached, we drew along with it a white body, adhering by one
extremity, and having the other engaged in the vagina. Towards the end
of the lentil, where the substance adhered, it appeared cylindrical,
then it swelled, and again contracted, to dilate anew in a greater
degree than at first; afterwards it contracted and terminated in a
point. A powerful magnifier was required to see all this. When pulled
from the lenticular body, the part was commonly broke, and also when
extracted by the queens from themselves. The figure and situation seemed
to authorise our considering it the penis itself, and the lenticular
body only an appendage. But the last queen we examined exhibited a
peculiarity that induced us to doubt the fact, and led us to suspect
that this body is nothing else than the seminal fluid itself, moulded
and coagulated in the vagina, and which from its viscosity adheres to
the lenticular substance, and accompanies it when separated from the
vagina. In this queen was found a little extravasated white matter, near
the opening of the vagina. This, though at first liquid, soon coagulated
in the air as the seminal fluid of drones does. In separating the
lenticular body from the vagina, we drew along with it a thread which
broke near the lentil; and seemed of too little consistence for the
penis of a male. The lenticular bodies, found in our queens, appeared
larger than in the males we dissected, and we have remarked with M. de
Reaumur, that these parts are not of equal size in every male.

* * * * *

_Experiment 1._--On the tenth o