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few Words, how this Infedt goes to work : It cuts the 
Wood with its Teeth, which are very fharp, and 
fevers fmall Fragments from it, which it binds toge- 
ther with a Silk of a particular Nature, and which 
feems to differ in fcveral refpeds from that of other 
Caterpillars , it is properly nothing but a vifcous 
Subftance drawn into Threads, which, like Glue, 
grows hard by degrees. 
But, probably, this would not fuffice for giving to’ 
the whole Work the Solidity that is required, if the 
induftrious Caterpillar did not, in fome meature, 
prepare the Fragments of the Wood, before it employs 
them i and this it does by keeping them in its Mouth 
for fome time, to foak and better fit them for join- 
ing themfelves into one Body. 
This Solidity of the Cafe of our Caterpillar is not 
what we need further trouble ourfelves about $ it 
fuffices that the bed Care is taken of that Particular : 
But this Caterpillar is alfo to become a Butterflies 
and we know, that Butterflies have neither Teeth nor 
Feet to dig withal : How then will this contrive to 
cut its Way through a Cafe that is fo hard, and fo 
exa&ly clofed up on all Sides ? One guefies, perhaps, 
that it oufes a Liquor which foftens that fort of 
Glue which binds the Bits of the Sawduft together. 
But what is the Nature of this Liquor > M. de Reau- 
mur ”j* has judged, that it muft be of a fingulai 
Kind. In deeding fome of thefe Caterpillars , I 
have found near the Mouth, under the Oejophagus , 
a fort of Bladder, of the Bignefs of a fmall Pea, full 
of a limpid Liquor, and of a penetrating Smell, 
■\ In the Place quoted above. 
which 
