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OMIT 1861 1866 1869 1872
I can see no difficulty in 1859 1860

might increase and modify 1861 1866 1869 1872
increasing and modifying 1859 1860

of raising slaves. When the instinct was once acquired, if carried out to a much less extent even than in our British F. sanguinea, which, as we have seen, is less aided by its slaves than the same species in Switzerland, OMIT natural selection might increase and modify the instinct— always supposing each modification to be of use to the species— until an ant was formed as abjectly dependent on its slaves as is the Formica rufescens.
Cell-making instinct of the Hive-Bee .—
I will not here enter on minute details on this subject, but will merely give an outline of the conclusions at which I have arrived. He must be a dull man who can examine the exquisite structure of a comb, so beautifully adapted to its end, without enthusiastic admiration. We hear from mathematicians that bees have practically solved a recondite problem, and have made their cells of the proper shape to hold the greatest possible amount of honey, with the least possible consumption of precious wax in their construction. It has been remarked that a skilful
workman,
workman
work-man,
with fitting tools and measures, would find it very difficult to make cells of wax of the true form, though this is
perfectly
perfectly
effected by a crowd of bees working in a dark hive.
Granting
Grant
whatever instincts you please,
and
and
it seems at first quite inconceivable how they can make all the necessary angles and planes, or even perceive when they are correctly made. But the difficulty is not nearly so great as it
at
....
first appears: all this beautiful work can be shown, I think, to follow from a few
very
....
simple instincts.
I was led to investigate this subject by Mr.
Water- house,
Waterhouse,
who has shown that the form of the cell stands in close relation to the presence of adjoining cells; and the following view may, perhaps, be considered only as a modification of his theory. Let us look to the great principle of
gradation,
graduation,
and see whether Nature does not reveal to us her method of work. At one end of a short