olate brown, the prolegs reddish, and the first segment edged
with pinkish color. The greatest care is necessary, as the spring
advances, to prevent the eggs from hatching before the oak buds
are ready for them, and the temperature must be regulated with the
greatest nicety. If the eggs can be kept somewhere about 50 deg. Fah.,
it would be quite safe; higher than that the mercury should not be
allowed to rise, till you are quite ready for the worms, and, on the
other hand, the eggs should not be allowed to freeze.

On emerging from the eggs, the worms should be allowed either to crawl
to the oak branches, or rather to sprigs obtained for that purpose,
the end of which should be placed in a jar, or bottle, of water, or
the worms may be placed on gently with a camel-hair brush. The leaves
should be well sprinkled with clean water that the caterpillars may
drink.

From some cause, not well understood, the young caterpillars have
a tendency to wander; and if care be not taken many may be lost. To
prevent this, it is well to cover the branches with a gauze bag, tied
tightly around the stems, and close to the bottle. Care must also
be taken that the caterpillars do not find their way into the water,
which they assuredly will if they have the opportunity, committing
suicide in the most reckless manner. If the number of caterpillars be
few, it is a good plan to place them at the outset with their food,
in a wide-mouthed bottle, covering the mouth with gauze. The branches,
particularly if the weather be warm, must still be occasionally
sprinkled, so that the caterpillars may have the opportunity of
drinking. It must be remembered that experiment is necessary in
rearing _Yamamai_, but one thing is ascertained, and that is, that the
worms must not be exposed to direct sunshine, at least not after seven
or eight in the morning. If the spring be warm, I am inclined to think
that a northeastern exposure is the best, and we may sum up by saying,
that comparatively cool and moist seasons are more favorable to
success that hot, dry weather. In America the worms suffer in the
early spring, from the rapid changes of temperature, 40 deg. at 9 A.M.
increasing to 70 deg. in the afternoon and falling off to freezing point
during the night. The worms cannot stand this. They become torpid,
refuse to eat, and consequently die. To prevent this, if the nights
be cold, they must be placed where no such change of temperature can
occur.

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