WITH THE PUCERONS. 239 
cure their food. ‘The aliment contained 
in their stomach is, on their return, 
equally distributed to their companions. 
These juices: scarcely evaporate, during 
this season, owing to the thickness of the 
horny rings investing the body.. I have 
known ants preserve, during’ a consider- 
able time, their internal stock of  pro- 
visions, when they could not impart it 
to their companions. When the cold in- 
creases in a gradual manner, (and. this is 
commonly what the ants experience who 
are screened from it by a thick wall of 
earth,) they collect and lie upon each 
other by thousands, and appear all hook- 
ed together. Is this done, in order to 
provide themselves a little heat? I pre- 
sume this to be the case, but our ther- 
mometers are not sufficiently delicate to 
indicate if this be really the fact. 
6. Of the Eggs of the Pucerons. 
THE pucerons, which are viviparous in 
the summer, are oviparous during Au- 
tumn. This very remarkable fact is here 
