CONSTITUTION AND DEVELOPMENT OF TERMITES. 315 
A fight is invariably provoked by putting soldiers of both 
species into a jar; if large larve or nymphs of Calotermes 
are introduced into a colony of Termes they are usually left 
alone by the soldiers, which probably fear them ; whereas Calo- 
termites (see p. 283) always kill any workers or nymphs of 
Termes which have been added to their nest. Termes 
soldiers fraternise, and do not fall out, even when taken from 
different nests. 
If triturated wood, soldiers, workers, and young of Termes 
are put together in a jar, the soldiers are soon seen to post 
themselves on the top of the rubbish, evidently on guard. 
Sometimes inmates of the same nest (soldiers and workers, 
or the latter inter se) come to blows, and wound each other 
ferociously in the thorax or abdomen, and do not stop unless 
others interfere to separate them. These internecine battles 
can be provoked, e.g. by overturning the contents of a nest, 
and are perhaps due to each individual imagining that his 
neighbour is the cause of the disturbance. 
Termites shun the light, and prefer to collect in the darkest 
parts of a vessel. ] 
(To be continued.) 
