XX11 



ILLUSTRATIONS 



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Troglodytes niger 

 Gorilla gin a 



Pterichthys testudinarius 

 Hatteria punctata . 

 Ceratodus forsteri . 

 Ling/ tla .... 

 Echinosphcerites aurantium 

 Granatocrinus 



Dalmanites socialis and Phaco j 

 Eurypterus fischeri . 

 Limulus polyphemus 

 Plesiosaurits macrocephahts 

 Ichthyosaurus comiminis . 

 Iguanodon bernissartens is 

 Pterodactylus spectabilis . 

 Rhamphorhynchus . 

 At ■ci/cCi ipteryx lit In gt aphica 

 Hesperornis regalis 

 Ichthyortiis victor . 

 Squalodon, molar teeth 

 Dinotherium giganteum . 

 Dinornis robust us . 

 Aha impennis and Alca tarda 

 Did us ineptus . 

 Mylodon robustus 

 Glyptodon clavipes . 

 Columba livia, varieties . 

 Phyllopteryx eques . 

 Enchenopa on a locust twig 

 Diapheromera femorata . 

 Phyllium siccifolium 

 Mygnimia avicidus and Colobo) 

 Methona psidii and Leptalis 0/ 



ps fee 



undus 



■liombus ft! St iatipen nis 

 ise .... 



Diagram of animal relationships 



Diagram of geological periods and their fossils 



Map of zoo-geographical regions 



Diagram illustrating .Mendel's law . 



PAGE 



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In descriptions of illustrations, male animals are frequently represented by the 

 astronomical sign for Mars, $ , and female by the sign for Venus, 9- 



