14 
INTRODUCTORY. 
The Systemn Naturae of Linnaeus, laid the foundation on 
which almost all succeeding systems have been built. He ar¬ 
ranged the Animal Kingdom into six classes, as follow : — 
CLASS I.—MAMMALIA. 
Order 1. Primates 
2. Bruta 
3. Ferae 
4. Glires 
5. Pecora 
G, Belluae 
7. Cete 
CLASS II.—AVES 
Order 1. Accipitres 
2. Piece 
3. Anseres 
4. Grallae 
5. Gallinae 
6. Passeres 
CLASS III—AMPHIBIA. 
Order 1. Reptilia 
2. Serpentes 
3. Nantes 
CLASS IV_PISCES. 
Order 1. Apodes 
2. Jugulares 
3. Thoracci 
4. Abdominales. 
CLASS V— INSECTA. 
Order 1. Coleoptera 
2. Hemiptera 
3. Lepidoptera 
4. Neuroptera 
5. Hymenoptera 
6. Diptera 
7. Aptera 
CLASS VI.—VERMES. 
Order 1. Intestina 
2. Mollusca 
3. Testacea 
4. Lithophyta 
5. Zoophyta 
To this system may be attributed, in a great measure, the 
rapid progress which Natural History has made since it was 
promulgated. The first outline appeared in 1748, and was per¬ 
fected in the 12th Edition of his Systema Naturae , published in 
1766. This system was improved by Blumenbach, in his 
“ Manual of Comparative Anatomy,” published in 1803. 
The modern discoveries, however, by Cuvier, Geoffroy, 
Lamarck, and other French comparative anatomists, have point¬ 
ed out the necessity of substituting other arrangements. Among 
the various systems which have been devised, that of Cuvier 
seems to approach nearest to the natural affinities ; especially in 
his class Mammalia, which is that we have adopted, with the 
addition of some new genera, possessing decided characters. 
Cuvier separates all known animals into four great divisions : 
