588 BRITISH FOSSIL REPTILES. 



"The strata covering the solid Oolite were thus noted, Marcn 21st, 1870 : 

 " Thin skerry beds of Forest-marble and shaly clay. 



" Band of white calcareous concretions and clay 



" Blue and greenish clay with white calcareous spots, and selenite 



" Brown, yellow, and grey layers, argillaceous, sandy, and oolitic 



" Grey and argillaceous bed, with selenite 



" Grey and greenish bed loosely oolitic, with Terebratala maxillata, 



Avicula, Astarte . . . ■ .08 



" Clay and loosely aggregated oolitic parts, with selenite and abund- 

 ance of carbonized wood, some shells, and most of the bones . 1 6 



" Clay below . . . . . .06 



" Great Oolite with undulated and waterworn surface. The two lower bands ' die 

 out ' to the southward, and there some of the bones came in contact with the rock, 

 and others were engaged in it." Phillips, ut supra, p. 251. 



The most striking of the remains here discovered was the fellow femur (right) of 

 the one (left) found in the previous year. The anterior surface of the latter (left) is 

 shown in cut, fig. 7. It is 5 feet 4 inches in length, the diameter of the middle of the 

 shaft is 1 foot, that across the condyles 1 foot 5 inches. The shaft is naturally sub- 

 compressed, but the flattening has been exaggerated by posthumous pressure to which 

 the closely cancellated texture of the interior of the shaft has yielded, with fracture of 

 parts of the denser outer crust ; but there is no sufficient indication of the head, a, having 

 been pressed so as to project inward, from any original disposition of that promi- 

 nence forward, such as characterises the femur in modern Crocodiles and Lizards. The 

 relation of the head to the shaft of the bone is thus more mammalian than saurian in 

 the gigantic Cetiosaur. But the 'neck,' b, is short, or almost nil; the trochanterian 

 angle, c, not produced above the level of the neck or head. The trace of any prominence for 

 muscular attachment at the inner part of the shaft, d, is feeble ; by no means such as 

 appears in Scelidosaurus or Iguanodon. The distal end expands to the condyles, e, f, but 

 in a minor degree than in the Monitor. 



The cut, fig. 8, shows the postero-external surface of the right tibia of Cetiosaurus 

 longus. The prominence, a, is that which receives the outer condyle of the femur ; the 

 border, b, in the view of the proximal end, gives the contour of the antero-internal part, 

 which is rather fiatter than in Monitor; c shows the production above the procneiuial 

 ridge at the fore part of the bone ; d is the part which was articulated to the distal 

 epiphysis supporting the outer malleolus. The proportions of the tibia to the femur are 



