it may have held a number of grubs, is still capable
of sprouting.
Knowing that the pod always exhibits a number of eggs greatly in excess
of the enclosed peas, and that each pea is the exclusive property of one
grub, we naturally ask what becomes of the superfluous grubs. Do they
perish outside when the more precocious have one by one taken their
places in their vegetable larder? or do they succumb to the intolerant
teeth of the first occupants? Neither explanation is correct. Let us
relate the facts.
On all old peas--they are at this stage dry--from which the adult
Bruchus has emerged, leaving a large round hole of exit, the
magnifying-glass will show a variable number of fine reddish
punctuations, perforated in the centre. What are these spots, of which I
count five, six, and even more on a single pea? It is impossible to be
mistaken: they are the points of entry of as many grubs. Several grubs
have entered the pea, but of the whole group only one has survived,
fattened, and attained the adult age. And the others? We shall see.
At the end of May, and in June, the period of egg-laying, let us inspect
the still green and tender peas. Nearly all the peas invaded show us the
multiple perforations already observed on the dry peas abandoned by the
weevils. Does this actually mean that there are several grubs in the
pea? Yes. Skin the peas in question, separate the cotyledons, and break
them up as may be necessary. We shall discover several grubs, extremely
youthful, curled up comma-wise, fat and lively, each in a little round
niche in the body of the pea.
Peace and welfare seem to reign in the little community. There is no
quarrelling, no jealousy between neighbours. The feast has commenced;
food is abundant, and the feasters are separated one from another by the
walls of uneaten substance. With this isolation in separate cells no
conflicts need be feared; no sudden bite of the mandibles, whether
intentional or accidental. All the occupants enjoy the same rights of
property, the same appetite, and the same strength. How does this
communal feast terminate?
Having first opened them, I place a number of peas which are found to be
well peopled in a glass test-tube. I open others daily. In this way I
keep myself informed as to the progress of the various larvae. At first
nothing noteworthy is to be seen. Isolated in its narrow chamber, each
grub nibbles the substance around it, peacefully and parsimoniously. It
is st
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