334 INSECT ARCHITECTURE. 



cedure is followed by a species of social caterpillars, 

 which feed on the pine in Savoy and Languedoc ; 

 and though their nests are not half the size of the 

 preceding, they are more worthy of notice, from the 

 strong and excellent quality of their silk, which 

 Reaumur was of opinion might be advantageously 

 manufactured. Their nests consists of more cham- 

 bers than one, but are furnished with a main entrance, 

 through which the colonists conduct their foraging 

 processions. 



Neat and order of marching of the Proccssionary Caterpillart 

 of the oak (Cnethocampa processionea). 



