CONTENTS. 
PAGE 
Memoir of Swammerdam ... 17 
Memoir of de Geer . . . .59 
Introduction to Entomology . . 67 
Anatomy and Physiology gf Insects . 125 
Nutrition ..... 126 
Digestion ..... 127 
Respiratory System . . . . 155 
Tracheae or Air-tubes . . . 160 
Adipose tissue, and Secretions . . 164 
Nervous System . . . . 173 
Reproductive or Generative System . 188 
Muscular System .... 192 
Muscles of the Head • . . 194 
Muscles of the Thorax . . . 195 
Systematic Arrangement of Insects . 199 
Order I. — Coleoptera . . . 201 
Order H. — Orthoptera . . . 206 
Fam. Forficulidao .... 218 
Fam. Blattidae .... 221 
Blatta (Blaberus) Gigantea . Plate VII. Fig. 1. 225 
B. Petivenana. Plate VII. Fig. 2. , 226 
