_Page_ Introduction 1 Materials 1 History 3 Organization 7 Cuvier 7 Sömmerring 10 Oken 10 Wagler 11 Goldfuss 11 Wagner 14 Quenstedt 17 Burmeister 17 Von Meyer 17 Another view of the Ornithosauria 24 -------------- Osteological collection illustrative of modifications of Ornithosauria in the Cambridge Greensand, pp. 28-94. Sternum 28 Coracoid 32 Scapula 35 Humerus 38 Radius and Ulna 42 Proximal carpal 48 Distal carpal 50 Lateral carpal 51 Metacarpal bone of wing-finger 53 First phalange of wing-finger 56 Second phalange of wing-finger 57 Claw phalange 59 Os innominatum 59 Femur 62 Tibia 62 Tarso-metatarsus 63 Atlas and axis 64 Cervical vertebræ 65 Dorsal vertebræ 69 Sacrum 73 Caudal vertebræ 75 Bones of the head 77 Basi-oocipital bone 78 Back of the cranium 80 Back of another cranium 84 Ethmo-sphenoid 85 Mould of the brain-cavity 87 ?Vomer 88 Quadrate bone 89 ?Pterygoid end of palatine bone 91 Premaxillary bones 91 Lower jaw 91 Teeth 92 -------------- Conclusion 94 A summing up 94 Restoration 103 Speculations on habits and aspect 104 Notes on German specimens 106 Classification 108 Synopsis of species 112 -------------- Appendix 129 Index 133 Plates, and explanation of Plates.