[ 3°2 1 
thefe Experiments. And for this Purpofe, before 
he plunged them in the Water, he firft wafhed 
them all over with a Hair-Pencil or Brulh ; and 
thefe being afterwards immerged in the Water, but 
very few Bubbles of Air have been difeovered on 
the Out fide of their Bodies ; and fewer as it appeared 
than Mr. de Reaumur had found upon thofe, upon 
which he made his Experiments ; neither was this 
laft of Opinion that all thofe Bubbles which he 
took notice of were formed by the Air rufhing out 
through the Pores, but that fome of them were 
alfo formed by the Air ftickmg about the exterior 
Part of the Skin. 
When a Caterpillar is plunged in Water, one 
Bubble of Air is almoft conftantiy obferved upon 
each of the Stigmata. Mr. de Reaumur concluded, 
that the Air was not expired by thefe Stigmata , be- 
caufe he could never obferve that any Bubbles of 
Air were ever driven out of thefe Stigmata , as one 
would think there muft have been, if the Air was 
really expired by thefe Apertures. Mr. Bonnet , on 
the contrary, has feen fome Bubbles of Air come 
-out from thefe Stigmata , and that has contributed 
to make him rather think that the Air infpired was 
affo eifeharged at thefe fame Orifices. But as thefe 
Experiments are not decifive, he is unwilling abfo* 
lutely to determine, but propofes the making more 
new Experiments. 
A Caterpillar can remain feveral Hours under 
Water without perifhing; it only falls into a State 
of Numbnefs ; but if again taken out of the Water, 
it is not long before it again fhews Signs of Life, 
and recovers. Mr. Bonnet has fought by fome 
Experiments, 
4 
