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the numbers of a humble-bee which could 1859 1860 1861
the numbers of a bee allied to our humble-bees, which 1866
whether a bee allied to our humble-bees could 1869 1872

a 1859 1860 1861
any 1866
large numbers in any 1869 1872

(differently to what really is the case) that 1861
that 1859 1860 1866 1869 1872

wax. 1859 1860 1861
wax and labour. 1866
labour and wax. 1869 1872

wax 1859 1860 1861 1866
labour and wax 1869 1872

would 1859 1860 1861 1869 1872
and labour would 1866

wax. 1859 1860 1861
labour and wax. 1866 1869 1872

important element of success
to
in
any family of bees. Of course the success of
the
any
species
of bee
of bee
may be dependent on the number of its
enemies,
parasites
or
parasites,
other enemies,
or on quite distinct causes, and so be altogether independent of the quantity of honey which the bees
can
could
collect. But let us suppose that this latter circumstance determined, as it probably often
has
does
determined,
determine,
the numbers of a humble-bee which could
existed
exist
in a country; and let us further suppose (differently to what really is the case) that the community lived
through
throughout
the winter, and consequently required a store of honey: there can in this case be no doubt that it would be an advantage to our
imaginary humble-bee,
humble-bee,
if a slight modification
in
of
her
instincts
instinct
led her to make her waxen cells near together, so as to intersect a little; for a wall in common even to two adjoining
cells
cells,
would save some little wax. Hence it would continually be more and more
advan- tageous
advantageous
to our
humble-bees,
humble-bee,
if
they
she
were to make
their
her
cells more and more regular, nearer together, and aggregated into a mass, like the cells of the Melipona; for in this case a large part of the bounding surface of each cell would serve to bound
the adjoining
other
cells, and much wax would be saved. Again, from the same cause, it would be advantageous to the Melipona, if she were to make her cells closer together, and more regular in every way than at present; for then, as we have seen, the spherical surfaces would wholly
disappear
disappear,
and
would all
would all
be replaced by plane surfaces; and the Melipona would make a comb as perfect as that of the hive-bee. Beyond this stage of perfection in architecture, natural selection could not lead; for the comb of the hive-bee, as far as we can see, is absolutely perfect in economising wax.
Thus, as I believe, the most wonderful of all known instincts, that of the hive-bee, can be explained by