Animal Intelligence: The International Scientific Series, Vol. XLIV.Romanes, George John
Science
Animal Intelligence: The International Scientific Series, Vol. XLIV.
Romanes, George John
Animal behavior; Animal intelligence
It sometimes happens that an ant has manifestly made a
bad selection, and is told on its return that what it
has brought home with much pains is no better than
rubbish, and is hustled out of the nest, and forced to
throw its burden away. In order to try whether these
creatures were not fallible like other mortals, I one
day took out with me a little packet of grey and white
porcelain beads, and scattered these in the path of a
harvesting train. They had scarcely lain a minute on
the earth before one of the largest workers seized
upon a bead, and with some difficulty clipped it with
its mandibles and trotted back at a great pace to the
nest. I waited for a little while, my attention being
divided between the other ants who were vainly
endeavouring to remove the beads, and the entrance
down which the worker had disappeared, and then left
the spot. On my return in an hour's time, I found the
ants passing unconcernedly by and over the beads which
lay where I had strewed them in apparently
undiminished quantities; and I conclude from this that
they had found out their mistake, and had wisely
returned to their accustomed occupations.
When the grain is thus taken into the nest, it is stored in regular
granaries, but not until it has been denuded of its 'husks' or 'chaff.'
The denuding process is carried on below ground, and the chaff is
brought up to the surface, where it is laid in heaps to be blown away by
the wind.
It is a remarkable thing, and one not yet understood, why the seed, when
thus stored in subterranean chambers just far enough below the surface
to favour germination, does not germinate. Moggridge says that out of
twenty-one nests and among many thousands of seeds that he examined, he
only found twenty-seven cases of incipient germination. Moreover, all
these cases occurred in months from November to February, while in the
nests opened in October, March, April, and May, no sprouted seeds were
discovered, though these are the months highly favourable to
germination. He is at a loss to suggest the treatment to which the ants
expose the seeds in order to prevent their sprouting. 'Apparently it is
not that moisture or warmth or the influence of atmospheric air is
denied to the seeds, for we find them in damp soil in genial weather,
and often at but a trifling distance below the surface of the ground;'
and he has proved that the vitality of the seeds is not impaired, for he
succeeded in raising crops of young plants from seeds removed from the
granaries.
He also says,--
Public-domain text, read in full here on John Shaqi.
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