LIST OF ILLUSTRATIONS 
HALF-VOL. VII 
COLOURED PLATES 
BEAVERS (Castor fiber) CONSTRUCTING Dam. 
From a Drawing by Wilhelm Kiihnert ........00. 0000s cc seeeeceeueeesuaes Frontispiece 
WHITE STORKS (Ciconta alba) ASSEMBLING FOR MIGRATION. 
From a Drawing by Wilhelm Kithnert........ 0... cece cece sees cece eee sence een e ene eaeene 
PRAIRIE Docs (Cynomys Ludovicianus). 
From a Drawing by Friedrich Specht .........0. 000 cscs cece cece eee e ee ee ee en ee eeeeteeees 
LLAMAS (Lama lama) CARRYING GOODS IN THE ANDES. 
From a Drawing by Friedrich Specht........ 0... cece cece cece ee ceee eee ee en sne teen sete cene 
BLACK-AND-WHITE ILLUSTRATIONS 
N.B.—Figs. 1123, 1124, 1125, 1129, 1130, and 1131 are from Alcock’s A Naturalist in Indian Seas, 
by the courtesy of Mr. John Murray. 
Page 
Proteus Animalcules (Ameba) showing Central Nervous System of a Centipede 
effect of stimuli (after Verworn) 4 (Zithobius) (after Vogt and Yung) 
A Typical Neuron (after Stohr) 6 | Central Nervous Systems of Termite 
Neurons of Jelly-Fishes and Sea-Anemone (Termes), Water-Beetle (Dytiscus), and 
(after R. and O. Hertwig) 7 Blow-Fly (fusca) (after Lespés, Gegen- 
Central Nervous System of Earth-Worm baur, and Blanchard) 
(after Leuckart) 8 | Central Nervous System of Mail-Shell 
Structure of Nerve-Cord of Earth-Worm (Chiton) (after B. Haller) 
(after Retzius) g | Central Nervous System of River-Snail 
Diagram of a Simple Reflex Action 9 (Paludina) (after Von Jhering) 
Central Nervous Systems of Annelids (after Central Nervous Systems of Pond-Snail 
Quatrefages) 10 (Limneus) and Garden-Snail (Helix) 
Structure of a Nemertine Worm II (partly after Lacaze-Duthiers) 
Central Nervous System of Apus (after Central Nervous System of Cuttle-Fish 
Lankester and Pelseneer) 12 (Sepia) (after Bourne) 
Central Nervous System of Crayfish (after Development of Central Nervous System 
Vogt and Yung) 13 in a Vertebrate 
Central Nervous System of Crab (after Development of Vertebrate Brain (after 
Gegenbaur) - 14 Huxley and Wiedersheim) 
Central Nervous System of Peripatus (after Brains of Trout, Frog, and Dog (after 
Balfour) 15 Ecker and Wiedersheim) _- 
xiii 
PAGE 
62 
134 
232 
Page 
15 
16 
17 
17 
18 
18 
20 
2I 
21 
