cure for coughs and
colds.

Other wild flowers suitable for Form I are buttercup, spring beauty,
dog's-tooth violet, hepatica, and trillium.

If there is a corner of the school ground that is partly shaded, and if
the soil is fairly mellow and moist, some of these wild flowers should
be transplanted there where they will grow well and can be seen every
day during the blooming period.

The leaves and flowers of the bloodroot and the above-mentioned wild
flowers can be used for drawing.

CORRELATIONS

Oral and written descriptions of the flowers studied afford suitable
exercises in language and composition.

INSECT STUDY

CECROPIA, OR EMPEROR-MOTH

The larvae of this, the largest of Canadian moths, may be found early in
September, as they wander about in search of a suitable branch upon
which to fasten their cocoons. If the pupils are not successful in
finding the larvae, the cocoons can be found after the leaves have
fallen, because their size makes them conspicuous. The only difficulty
in finding them is due to their being of the same colour as the withered
leaves, so that they are easily mistaken for the latter.

The pupils should be directed to look carefully at what appears at first
sight to be a withered leaf attached to a tree or shrub, and in this way
many cocoons of various moths will be found.

~Observe.~--The large size--from three to four inches long; the greenish
colour; the stumpy legs; movements, as walking, feeling, clinging; the
rows of warts, and short, stiff spines on these; the feeding habits,
biting or sucking; eggs of parasites, for frequently these are found on
the larvae.

Place the larva in a box covered with gauze, and observe the spinning
and weaving of the cocoon.

From what part of the body is the silk obtained? With what organs are
the threads placed in position? What part of the cocoon is made first
and what part is made last? What time is required for making the cocoon?
How is the cocoon fastened to the tree? What provision is made in the
cocoon for warmth, for protection from birds, for shelter from rain?

Cut open a cocoon and examine the pupa, noting the mummy-like case on
which can be seen the impressions of the wings developing within.

If the cocoon is kept in the vivarium in a cool place, so that the
conditions may be as nearly as possible like the natural conditions, the
adult moth will emerge about the first of May. In April the cocoon
should be wetted occasion