the same
result. Two facts are immediately obvious: the Osmia is able to reverse
the order of her laying and to start with a more or less long series of
males before producing any females. There is something better still;
and this is the proposition which I was particularly anxious to prove:
the female sex can be permuted with the male sex and can be permuted to
the point of disappearing altogether. We see this especially in the
third case, where the presence of a solitary female in a family of
twenty-six is due to the somewhat larger diameter of the corresponding
Snail-shell.

There would still remain the inverse permutation: to obtain only
females and no males, or very few. The first permutation makes the
second seem very probable, although I cannot as yet conceive a means of
realizing it. The only condition which I can regulate is the dimensions
of the home. When the rooms are small, the males abound and the females
tend to disappear. With generous quarters, the converse would not take
place. I should obtain females and afterwards an equal number of males,
confined in small cells which, in case of need, would be bounded by
numerous partitions. The factor of space does not enter into the
question here. What artifice can we then employ to provoke this second
permutation? So far, I can think of nothing that is worth attempting.

It is time to conclude. Leading a retired life, in the solitude of a
village, having quite enough to do with patiently and obscurely
ploughing my humble furrow, I know little about modern scientific
views. In my young days I had a passionate longing for books and found
it difficult to procure them; to-day, when I could almost have them if
I wanted, I am ceasing to wish for them. It is what usually happens as
life goes on. I do not therefore know what may have been done in the
direction whither this study of the sexes has led me. If I am stating
propositions that are really new or at least more comprehensive than
the propositions already known, my words will perhaps sound heretical.
No matter: as a simple translator of facts, I do not hesitate to make
my statement, being fully persuaded that time will turn my heresy into
orthodoxy. I will therefore recapitulate my conclusions.

Bees lay their eggs in series of first females and then males, when the
two sexes are of different sizes and demand an unequal quantity of
nourishment. When the two sexes are alike in size, as in the case of
Latreille's