Of their Sex, &c. 79 
tention will not be able to find out any the leaft altera- 
tion or difference here. The two ends are more protu- 
berant than the middle, which is more flender, and this 
is the form of it in the belly of the infeét, and even after 
it is depofited in the cells for feveral days, till the time it 
quickens, and appears a perfect worm. | 
And thus we find it in the eggs of other infeéts and 
animals, which are. remarkable for their proportions, 
different figures, colours, regularities, exact pofitions, Sc. 
particularly the filk-worm. 
If then neither of thefe can be fafely affirmed, or fully 
proved, of the fperm in man or beaft, that there never 
is any difference, either in the quantity or the figure, 
then it muft be adinitted that it is nothing but an egg, 
and confequently that this creature is of the female 
kind. | 
But I add, as a further evidence in the cafe, and what 
is more fully convincing, it’s different parts, which com- 
pofe the whole, and are eafily feparated and diftinguifhed 
from each other, as I have often proved, placing the in- 
fe&t upon my hand or an handkerchief, fhe has ( moving 
upon it) laid feveral of thefe oblong fubftances, and to 
all appearance as full of f{pirit and vigour as at firft. 
I have immediately examined thefe, which ftill keep 
their form, while you gently move them up and down; 
but no fooner have I by the help of a needle penetrated 
the fame, but the whole moft plainly appeared, (even to 
the naked eye) to be a fluid, or liquid matter, contained 
in a thin fkin or membrane; and without any the leaft 
difficulty feparated the one from the other. Tho’ Mr. 
Rufden 
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