CONTEXTS. 



XI 



The Hedgehog's Skull, . 

 Skull of Cartilaginous Fishes, . 

 Ear-drum of Hedgehog, . 

 Parts of the Palate and Ear in 

 Hedgehog's Skull, 



Page 

 137 

 138 

 139 



140 



Arches of the Face, . 

 Primitive Types of Mammalia, 

 Bibliogi'aphy, . 

 Fossil Horses, . 

 Extinct Mammals, . 



Page 

 141 

 142 

 143 

 144 

 145 



LECTURE VI. 

 Insectivora — coiUinued. 



The Mole very Archaic, . 

 Greediness of the Mole, 

 Blind, but Quick of Hearing, 

 Development of the Mole, 

 Eecords of Lost Types, 

 An Hereditary Agriculturist, 

 The Formation of the Tissues of 



the Mole, 

 A Dry Skull, . 

 Air-Galleries of the Ear, . 

 Labyrinth of the Ear, 



146 

 147 

 148 

 149 

 150 

 151 



152 

 153 

 154 

 155 



LECTURE VII. 



Insbcti vora — concluded. 



Foreign Insectivora, . 



Jlascarene Types, 



Skull of the Tenrec, . 



Nasal Labyrinth of the Tenrec, 



Lesser Kinds of the Centetidaj, 



Crested Skull of the Tenrec, 



Wallace's Line, 



A Complete Orbital Ring, 



The Young Colugo, 



A Puzzling Type, 



A Tertiary Bat, 



Comb-like Teeth of Colugo, 



166 

 167 

 168 

 169 

 170 

 171 

 172 

 173 

 174 

 175 

 176 

 177 



The Colugo and the larger Bats, 

 The Basi-Cranial Beam, . 

 Relations of Air - Breathing 



Types, .... 

 Old Remnants in New Types 

 The Rhynchocyon, . 

 A Proboscidean Insectivora, 

 Marsupial Characters, 

 Working out old Strains, . 

 Bibliography of Insectivora, 

 New Insectivora, 



178 

 179 



180 

 181 

 182 

 183 

 184 

 185 

 186 

 187 



LECTURE VIII. 

 The Remaining Orders of Mammalia. 



The Chiroptera, 



A Long-fingered Animal, . 



Evolution of a Flying Animal, 



An Unfolded Bat, 



The Rodentia, . 



Voyage of a Naturalist, . 



Skull of a Guinea-Pig, 



Lemurs and Aye-aye, 



