536 PSYCHOLOGICAL PHYSIOLOGY. 



when the number of the inhabitants of a nest is too numerous to admit 

 of its accommodating them all, swarm in a similar manner to the bees. 

 But such a swarm would only consist of workers and soldiers, which 

 select at the time of pairing a couple from the numerous royal pairs, 

 and raise them to be the lords of the colony. 



We terminate here with the consideration of this family, in which 

 .the interesting facts of the earlier ones are again repeated, the descrip- 

 tion of the intellectual impulses that have appropriately been designated 

 as instinctive phenomena, as perfectly as a short outline will admit. 

 As anxious for self-preservation, and therein exhibiting especially its 

 intellectual functions, the insect steps forth into the series of inde- 

 pendent organic beings, and as still anxious for the conservation of 

 the species, it again quits this large community. It was requisite to 

 illustrate this result, already expressed in the introduction to the 

 second chief division, as concisely as possible, and therefore all facts 

 which remain more or less isolated were necessarily omitted. This we 

 could the more satisfactorily do, as another work, to which we have 

 here frequently referred, as well as below, has endeavoured to give a 

 similar solution to the same problem, yet with infinitely greater detail ; 

 we mean Kirby and Spence's Introduction to Entomology, a book which, 

 for the animation of its description, fidelity of portraiture, and fulness 

 of facts, vainly seeks its equal, and will with difficulty be surpassed. 

 We will therefore refer our readers to it, who may here have observed 

 many defects, and none, we can assure them, will quit it undelighted 

 or without regret. 



