CONTENTS OF VOL. II. XXXI 



Page. 



Characters of animals, how communicated. Descrip- 

 tions. Drawings. Specimens. Preserving pow- 

 der, preserving soap. Phials with alcohol, how 

 closed. 128 



PART III. 



ON NOMENCLATURE, 



On Systems. As many Natural Methods as there are 

 systems of organs. Reputed natural genera con- 

 taining artificial combinations. Artificial method. 

 Mixed method. The exclusive employment of po- 

 sitive and negative characters recommended. 

 Want of unity of method in the primary division of 

 Linnaeus. . . - .136 



Subdivisions employed in arrangement. 



1. Species. Sexual differences. Varieties. Specific 

 name. Abuses. Specific character, necessarily va- 

 riable with the progress of the science. Referen- 

 ces. Specific description, . . 148 



CSrenus. Generic names sometimes wantonly changed. 



Generic character. Generic description. Families. 155 



