180 
ORGANS OF HEARING. 
TueEre is no part of the physiology of insects 
more interesting, and yet still in such doubt, as 
whether or not they enjoy the sense of hearing in 
the same manner as other animals. 
Professor Rennie has published, in the Field 
Naturalist’s Magazine, several papers containing 
some very interesting discussions on this subject, 
which we shall endeavour to condense, adding such 
matter as occurs to us as throwing light on this in- 
tricate suject. In the first place, he has translated 
Straus-Diirckheim’s excellent paper, from his work 
on articulated animals. 
It is now generally believed that the antenne 
are the organs of hearing ; and this idea is strongly 
supported by Diirckheim. In condemning the notion 
of their being the organs of touch, he says, ‘‘ Many 
insects, besides, have their antenne so short, that 
they would be obliged to stand erect on the erown 
of their heads in order to come at the bodies which 
they might thus wish to explore, and for this their 
feet are much better adapted. 
« Since almost all articulated animals possessing 
a solid skin have antennee, which are furnished 
