CONTENTS OF VOL. IT. XXXi 
Page. 
Characters of animals, how communicated. Descrip- 
tions. Drawings. Specimens. Preserving pow- 
der, preserving soap. Phials with alcohol, how 
closed. : x : : 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 
Linneus. : 4 : 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 
Genus. Generic names sometimes wantonly changed. 
Generic character. Generic description. Families. 155 
