and begins eating its way into the apple, it gets the poison.
SOME COMMON ANIMAL FORMS
Brief lessons should be given on some of the lower members of the animal
kingdom, for the purpose of broadening the interests of the pupils. The
following are suggested as types: snail, spider, freshwater mussel
(clam), crayfish (crab), centiped, milliped, salamander, and wood-louse.
These are common animal forms, most of which are frequently seen by the
pupils, but seldom are their interesting life habits or their places in
the animal kingdom recognized. The salamander is to many pupils a lizard
of the most poisonous kind; centipeds and millipeds are worms, and they
do not recognize that the clam is an animal with sensibilities and
instincts.
REFERENCES
Kellogg: _Elementary Zoology_
Silcox and Stevenson: _Modern Nature Study_
CENTIPEDS AND MILLIPEDS
Under stones and sticks in moist soil are to be found two worm-like
forms, both having many legs.
One of these animals is flat, about an inch long, brown in colour, and
provided with a pair of long feelers. On each division of the body is a
single pair of legs. This is the _centiped_. The other animal is more
cylindrical in shape and has two pairs of legs on each division of the
body. Its colour is a darker brown than that of the centiped, and it has
a habit of coiling into a spiral shape, when disturbed, so that the soft
under surface is concealed. This is the _milliped_. Both of these
animals are quite harmless and feed on decaying vegetable matter. They
stand midway between worms and insects in forms and habits.
A brief observation lesson on each animal, involving their movements and
the structural features named above, will enable the pupils to identify
them and to appreciate their position in the animal kingdom.
SALAMANDERS, OR NEWTS
Some forms of these are found in water, as in streams, ponds, and
ditches, while other forms are found on land, where they hide under
stones and sticks. They are commonly mistaken for lizards, which they
closely resemble in shape; but the two animals may be distinguished by
the fact that the surface of the body of a salamander is smooth, while
that of a lizard is covered with scales.
The small red or copper-coloured newts are the most common in Ontario
and are frequently found on roads after heavy rains. The tiger
salamanders are larger than the red newts and are marked with orange and
black spots, hence the name "tiger". M
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