neous change
into the four-winged fly.

INSECTS SUITABLE FOR LESSONS IN FORM II

Walking-stick insect, katydid, cricket, mole-cricket, clothes-moth,
giant water-bug, potato beetle, click-beetle, luna moth, and
swallow-tail butterfly.

CHAPTER IX

FORM III

AUTUMN

GARDEN WORK

The pupils in this Form should be able to do all of the work required of
them in the garden without assistance. They should aim at intensive and
thorough cultivation and, in the autumn, when the plants of their
gardens ripen, these should be removed and the soil carefully spaded.
They should continue the work of selecting the seed from the best
flowers, as indicated in the work for Form II, and should grow some seed
from vegetables and perennials seen to be particularly good.

Boys in this Form may also wish to do some gardening for profit. In some
cases where there is plenty of space, this may be carried on in a part
of the school garden set aside for that purpose. Usually, however, it
will be found most convenient to carry it on in the home garden. Best
varieties for local markets should then be grown and attention given to
the proper time and manner of marketing or storing for a later market.
Cool, well-ventilated cellars are best for most fruits and vegetables.

TREATMENT OF FUNGI

During the summer and early autumn months attention should be given to
the spraying of plants for blight and for injurious insects. The potato
is commonly affected by a fungous disease which causes the stalks to
blacken and die before the tubers have matured. This disease may be
prevented in large measure by the use of a fungicide known as Bordeaux
mixture. This may be prepared as follows:

Take one pound of copper sulphate (blue vitriol); make it fine by
pounding it in a bag or cloth and then dissolve it in water, using a
wooden pail. It dissolves rapidly if put in a little cheese-cloth sack,
which is suspended near the top of the pail by putting a stick across
the pail and tying the sack of copper sulphate to it. Dilute this
solution to five gallons. Take also a pound of unslaked or quick-lime
and add a cupful of water to it. When it begins to swell up and get hot,
add more water slowly, and, when the action ceases, dilute to five
gallons. Mix these two solutions together in a tub or barrel, and churn
them up, or stir them together vigorously. They give a deep
robin's-egg-blue mixture, which is slightly alkaline and should be used
at on