2 THE BUTTERFLY VIVAIUCM. 



by the uninitiated are exhibited as naturally and 

 strikingly as if seen in their native depths, have, it 

 must be admitted, given quite a new stimulus to 

 this class of study. At the same time, it was 

 beginning to be felt that the field of study was, 

 to a certain extent, of a limited character, and a 

 strong desire was manifested that the sphere of 

 research of that class should be extended, and the 

 subjects varied. 



In order to gratify this longing for an extended 

 range of observation, I propose, by somewhat simi- 

 lar means, to afford equal facilities for pursuing 

 a course of study in an entirely different field ; and 

 with this view I am about to describe a novel kind 

 of Vivarium, by means of which another and very 

 distinct class of animal life — that of the " world of 

 insects" — may be made to exhibit its wonders as 

 conveniently and instructively as those of the Algce, 

 and Zoophytes, and Molluscs of the river or the-ocean 

 have been shown in a well-ordered Aquarium. 



The nature of the very simple structure by 

 means of which this is to be effected, will be de- 

 scribed after I have put in my plea concerning the 

 interest of the living objects, whose curious habits 

 and wonderful metamorphoses it is intended to 

 display. 



