DIRECTIONS POR PLACING THE PLATES. 



Frontispiece and Engraved Title to face each other, and precede the 

 printed title-page. 



II. Fossil Infiisoria to face page 154 



rV. Sponges, Spicula from 



V. Zoophytes 



VT. Echino-dermata, &c. . 

 Vn. Proboscis of Fly 

 VUL Tongue, &c. of Drone-fly . 

 rX. Antenna, &c. of Moth 

 X. Scales from "Wings of Butterflies 



33. Parasites 



Xn. Animal Structures 

 "yTTT. Animal Tissues .... 

 XIV. Human Skin and Hair 

 XV. Vegetable Cells, &c. . 

 XVX Vegetable Structures . 



176 

 194 

 252 

 286 

 296 

 304 

 306 

 326 

 344 

 352 

 360 

 394 

 424 



