16 THE UNIVERSITY SCIENCE BULLETIN. 
and suggestive. He departs from the prosaic in setting forth 
the behavior of the bugs he has studied. Like Uhler, he takes 
the trouble to make you go with him to the aquarium or the 
pool and see the little details of the daily life of the bugs he 
depicts. 
In the past few years we have had a number of texts relat- 
ing to water life, but little that is original on water bugs. 
Wesenberg-Lund and Brocher stand out as most important 
foreign contributors to the general biology of the group with 
detailed studies upon single insects by Dogs, Wefelschied and 
Hagemann. 
Much important work on morphology relates to the insect 
biology, but to enumerate the many truly important papers on 
mouth parts, genitalia, and the like, would bring us without 
the limits of this paper. 
