140 PETRIFACTIONS AND THEIR TEACHINGS. CHAP, III. 



(figured in the "Geology of the South-East of England," 

 PL V.) ; above it is a remarkably interesting portion of the 

 vertebral column, with many dermal bones of another Hylce- 

 osaurus, (figured in "Phil. Trans." for 1849, PL XXXIL). 



By the side of the first specimen, to the left of the spec- 

 tator, are a very large scapula, and other bones ; and on the 

 right, the proximal end of the corresponding scapula, and the 

 humerus, with many portions of ribs, and a phalangeal bone, 

 belonging to the same individual ; from a bed of Wealden 

 Clay, near Bolney, in Tilgate Forest. 



On the right hand is a model of a nearly perfect dorsal 

 dermal spine of the Hylceosaurus, (the original, fourteen 

 inches long, discovered by Mr. Peter Fuller, of Lewes, is in 

 the possession of the Author,) figured in "Phil. Trans." 

 1850, PL XXVII. 



(7. [3.] Iguanodon. The contents of this Case are chiefly 

 bones and teeth of reptiles of the genus Iguanodon, from the 

 strata of Tilgate Forest, in Sussex, discovered and developed 

 by the Author. 



Upper Shelf. On the left a very fine Coracoid bone im- 

 bedded in Tilgate grit ; and a portion of another Coracoid. 



A scapula, eighteen inches long, of an unknown reptile; 

 (figured and described in "Phil Trans." 1841, PL IX. X.). 



Portions of a very large Scapula, probably of Pelorosaurus ; 

 (figured in "Fossils of Tilgate Forest," PL XVI.). 



Fragment of the shaft of a Femur twenty-three inches in 

 circumference. (Marked No. 4.) See " Fossils of Tilgate 

 Forest," PL XVIII. ; this was the first portion of a colossal 

 bone discovered by the Author in the Wealden of Sussex, in 

 1820. 



Two pieces of a femur, tibia, fibula, and two metatarsal 

 bones, of the same young and comparatively small Iguanodon. 



Bone in a block of Tilgate grit ; undetermined. 



Fragment of a very large Os pubis, probably of the Igua- 

 nodon. 



Near this specimen there is a bone supposed to be part 

 of the Ischium, but it is imperfect at the extremities, and the 

 form of the original cannot be ascertained with certainty. 

 There are portions of several other bones on this shelf that 

 cannot be satisfactorily interpreted till more perfect specimens 

 are discovered. 



