develop at one end of the seed. Note which end bears this tiny plant.

7. Note the development of this embryo plant and the formation of stem
and root.

8. Of what use is the bulky part of the seed? To answer this, let the
pupils separate the white part of a kernel of corn, which is attached to
the embryo plant, from the pulpy mass surrounding it. Set five such
plants in moist sand and also five germinating seeds not so dissected.
Pupils will discover that the mass surrounding the embryo is for the
nourishing of the embryo plant. It is a little store of food prepared by
the mother plant for the little ones that grow from the seeds. Note that
it disappears as the plant grows.

To further show the great value of this stored plant food, put a
large-sized pea in a pot of moist moss or sawdust for a few days. When
it has germinated and its root is a couple of inches long, place the pea
in a thistle tube or small funnel, with the root projecting down the
tube into a glass of water in which the funnel tube rests. Place all in
a sunny window and note how much growth the plant is able to make
without any food except that which the seed contained.

9. Note the development of the root and root-hairs. It is by means of
these root-hairs that the plant absorbs moisture. The branching form of
the root gives greater support to the plant and increased area for
absorption of water by means of root-hairs.

To show the direction taken by the root and also by the shoot, take a
glass jar with straight sides like a battery jar (a large fruit jar will
do); line it inside with a layer of blotting-paper and then fill it with
moist sawdust. Drop seeds of sunflower or squash down between the paper
and the glass. The moisture from the blotting-paper will cause them to
sprout, the shoot or stem always taking an upward direction and the root
turning downward quite regardless of the position in which the seeds
were placed.

10. Apply this study to seed planting: Plant seeds of wheat in four pots
of soil, No. 1, half an inch deep; No. 2, two inches; No. 3, four
inches; No. 4, six inches. Repeat this experiment, using buckwheat. What
seeds are up first? What seeds last? Which are best after a week? After
three or four weeks? From this experiment could you recommend a certain
depth for the planting of wheat and buckwheat?

11. Does the kind of soil make any difference? To answer this have
different pupils choose different soils, such as (1) coar