CLASSIFICATION AND ADAPTATION 3 



species has unusually long and hairy antennae. These 

 are usually tactile organs, but it has been found that 

 the habit of Corystes is to bury itself deep in the 

 sand with only the tips of the antennae at the 

 surface, and the two are placed close together so as 

 to form a tube, down which a current of water, 

 produced by movements of certain appendages, 

 passes to the gill chamber and provides for the re- 

 spiration of the crab while it is buried to a depth of 

 two or three inches. The results of the investiga- 

 tion of habits and functions may be called Bionomics. 

 It may be aided by scientific institutions specially 

 designed to supplement mere observation in the 

 field, such as menageries, aquaria, vivaria, marine 

 laboratories, the objects of which are to bring the 

 living organism under closer and more accurate 

 observation. The differences between the methods 

 and results of these two branches of Biology may 

 be illustrated by comparing a British Museum 

 Catalogue with one of Darwin's studies, such as 

 the ' Fertilisation of Orchids' or 'Earthworms.' 



Other speculations in Biology are related to 

 Taxonomies or Bionomics according as they deal 

 with the structure of the dead organism or the 

 action of the living. Anatomy and its more theo- 

 retical interpretation, morphology, are related to 

 Taxonomies, physiology and its branches to Bio- 

 nomics. In fact, the fundamental principles of 

 physiology must be understood before the study of 

 Bionomics can begin. We must know the essential 

 nature of the process of respiration before we can 

 appreciate the different modes of respiration in a 

 whale and a fish, an aquatic insect and a crustacean. 

 The more we know of the physiology of reproduction, 



