xviii LIST OF ILLUSTRATIONS 



FACING PAGE 



Scale of Sole . . . 208 



Scale of Haddock . . 208 



Embryos of Dog-fish 209 



Dog-fish and Rays . . . -. . . . . 209 



Angel or Monk-fish . 218 



Butterfly Gurnard . .218 



Ray swimming . . . ...... 219 



Under surface of Ray < 219 



Sticklebacks . . . . ' . . * V*'' . . 226 



Blenny > ' * r ;' . . 226 



Gurnard . . . . 226 



A school of PoUack . . . ..'..' ..'** . . 227 



Pipe-fish 227 



Embryo of Flounder . . 234 



Migration of eye in head of Flounder . - > - - '"'' . . 234 



Marked transplanted Plaice . . . . . - i> . 235 



Turbot - . -. -V* 235 



Young Hippocampus . . '..* ; . . * * * * 238 



Ribbon-fish . . . . , . >' * ; -J.?*. I > **ti . 238 



Boar-fish with mouth contracted . /./..* . . . 239 



Boar-fish with mouth expanded . . 'Y;^ . 1 i>*+ . 239 



Newts 244 



Common Toad * . . . 245 



Edible Frog , . ( , . , ^v_ . 245 



Common Tortoise . . . | ... . j*Z- . 250 



Giant Galapagos Tortoises ...... * $& . 250 



A young Crocodile . . . ^ . . --^^ f^ . 251 

 The Alligator's Smile . . . , , r . , . , .251 



Lizard v .., % ^ . #-,-& 2 54 



Lizard capturing prey . . ..... . . 254 



Chameleon on the watch . . . .^- . . 255 



Bearded Chameleon, showing change of colour markings . .255 



1. Chameleon capturing insect . . . . .256 



2. M with tongue fully extended 256 

 3* swallowing insect . . . . . 256 



