CONTENTS. lx 



P,7ge 

 The Common and Great Lake Trout Varieties of the 



Former 253 



Migration of the Salmon Salmon Fishery near Coleraine 254 



Growth of the Salmon Change in its Markings 255 



The Pike its Voracity Val ue Longevity , 255 



The Carp" Gold and Silver Fishes "Bream 256 



ORDER ACANTHOPTERYGII (Fins with Spiny Rays) 257 



The Wrasse Fishing Frog Gobies and Blenmes 257 



The Mullet Grey Mullet of Belfast 'Bay 258 



Riband-shaped Fishes Red-band Fish."! 258 



Pilot Fish Tunny its High Temperature 259 



Mackerel Gurnards 260 



Perch its former Value its Habits 261 



Lepidosiren Is it a Reptile or a Fish? its Habits 262 



Fossil Fishes their Arrangement in Four Primary Groups 

 Singular Forms and Covering of the Fossil Fishes of 

 the Old Red Sandstone 262 



NOTE. On the Improvement of Fisheries and the Educa- 

 tion of Fishermen 263 



CLASS II BEPTILIA REPTILES. 



Characteristics of the Class Variety of Form and Structure 265 



Number of Species Their Division into Four Orders 265 



Geographical Distribution Why Reptiles are Cold-blooded 266 



ORDER I. AMPHIBIA AMPHIBIOUS REPTILES 267. 



Consist of Two Groups The Axolotl 268 



The Common Frog Its Metamorphoses Food 269 



Tree Frogs Respiration Torpidity The Common Toad 270 



Metamorphosis of the Newts Their Carnivorous Habits... 272 

 Errors respecting the Toad Footprints of Gigantic Batra- 



chian Reptiles 273 



OKIUCU II. OPHIDIA SERPENTS 274 



Their Flexibility Number of Species Distribution 275 



Boa-Constrictor Jaws of the Snake Poison Fangs of 



Rattle-snake 276 



Egyptian Naja The Cobra-di-Capello Anecdote of one 277 

 Incubation observed in a Serpent Former Existence of 



Pythons and Boa-Constrictors in England 278 



English Adder and Common Snake Habits Movements 279 

 Supposed virtues of the flesh Blind Worm Altitude at 



which some are found . 281 



A 2 



