to prefer the red. Half-decayed leaves of the red variety and
fresh leaves of the green were attacked about equally. When leaves
of the cabbage, horse-radish (a favourite food) and of the onion
were given together, the latter were always, and manifestly
preferred. Leaves of the cabbage, lime-tree, Ampelopsis, parsnip
(Pastinaca), and celery (Apium) were likewise given together; and
those of the celery were first eaten. But when leaves of cabbage,
turnip, beet, celery, wild cherry and carrots were given together,
the two latter kinds, especially those of the carrot, were
preferred to all the others, including those of celery. It was
also manifest after many trials that wild cherry leaves were
greatly preferred to those of the lime-tree and hazel (Corylus).
According to Mr. Bridgman the half-decayed leaves of Phlox verna
are particularly liked by worms. {16}

Pieces of the leaves of cabbage, turnip, horse-radish and onion
were left on the pots during 22 days, and were all attacked and had
to be renewed; but during the whole of this time leaves of an
Artemisia and of the culinary sage, thyme and mint, mingled with
the above leaves, were quite neglected excepting those of the mint,
which were occasionally and very slightly nibbled. These latter
four kinds of leaves do not differ in texture in a manner which
could make them disagreeable to worms; they all have a strong
taste, but so have the four first mentioned kinds of leaves; and
the wide difference in the result must be attributed to a
preference by the worms for one taste over another.

Mental Qualities.--There is little to be said on this head. We
have seen that worms are timid. It may be doubted whether they
suffer as much pain when injured, as they seem to express by their