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1859
1860
1861
1866
1869
1872

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1859
1860
1866
1869
1872

( I. e. 1860 1861
( i . e . 1859
( i.e 1866
( i.e. 1869 1872

one sixth of 1859 1860 1861 1866 1869
one-sixth 1872

which they 1859 1860 1861 1866 1869
the sphere of which they 1872

flat bottoms; 1859 1860 1861 1866
bottoms with flat sides; 1869
flat bases; 1872

parts, only little bits, 1859 1860 1861 1866
some parts, only small portions, 1869 1872

on the opposite 1859 1860 1861 1866
in circularly gnawing away and deepening the basins on both 1869 1872

as they circularly gnawed away and deep- ened the basins on both sides, 1861
as they circularly gnawed away and deepened the basins on both sides, 1859 1860 1866
OMIT 1869 1872

at such a distance from each other, that by the time the basins had acquired the
above-stated
above stated
width ( I. e. about the width of an ordinary cell), and were in depth about one sixth of
the diameter
the diameter
of the
diameter
sphere
of which they formed a part, the rims of the basins intersected or broke into each other. As soon as this occurred, the bees ceased to excavate, and began to build up flat walls of wax on the lines of intersection between the basins, so that each hexagonal prism was built upon the
festooned
scalloped
edge of a smooth basin, instead of on the straight edges of a three-sided pyramid as in the case of ordinary cells.
I then put into the hive, instead of a thick,
square
rectangular
piece of wax, a thin and narrow, knife-edged ridge, coloured with vermilion. The bees instantly began on both sides to excavate little basins near to each other, in the same way as before; but the ridge of wax was so thin, that the bottoms of the basins, if they had been excavated to the same depth as in the former
experi- ment,
experiment,
would have broken into each other from the opposite sides. The bees, however, did not suffer this to happen, and they stopped their excavations in due time; so that the basins, as soon as they had been a little deepened, came to have flat bottoms; and these flat
sides,
bases,
bottoms,
formed by
little thin
thin little
plates of the vermilion wax
having been
having been
left ungnawed, were situated, as far as the eye could judge, exactly along the planes of imaginary intersection between the basins on the opposite sides of the ridge of wax. In parts, only little bits, in other parts, large portions of a rhombic plate
were thus
had been
left between the opposed basins, but the work, from the unnatural state of things, had not been neatly performed. The bees must have worked at very nearly the same rate on the opposite sides of the ridge of vermilion wax, as they circularly gnawed away and deep- ened the basins on both sides,