﻿GREAT OOLITE. 35 



dicated in the humerus of a small or young Cetiosaurus, figured by Phillips at p. 273, 

 Diag. ci. 



The length of the Kirtlington humerus, figs. 3 and 4, is 4 feet 3^ inches ; extreme 

 breadth of the proximal end 1 foot 8 inches ; of the distal end 1 foot, 3 inches ; 

 diameters at the middle of the shaft 8 inches by 4 inches. 



The proportion of the ulna (fig. 5) to the humerus appears to be nearly that 

 in the Monitor. The shaft is more distinctly three-sided, the anconal surface being 

 strengthened by a median longitudinal rising or ridge not present in Monitor. As in 

 this Lizard the palmar concavity excavates the whole of the upper half of that surface of 

 the shaft except at the outer and inner ridged boundaries. The margin toward the 

 radius is concave, the opposite one nearly straight, feebly convex. Both ends of the ulna 

 of the Kirtlington Cetiosaur are wanting ; it measures in this state upwards of 3 feet 

 in length. In the section, fig. 5, a , the palmar side, a, is 12 inches across ; the facet, b, of 

 the anconal side is 11 inches ; the narrower facet of the same side, c , is 7 inches. No 

 recognisable bones of the fore foot of the Cetiosaurus longus appear as yet to have been 

 discovered ; but the proportions of the known parts of the fore limbs are such as to make 

 it more likely that they took their share in a quadrapedal mode of progression than that 

 they were borne aloft, with the trunk, on the hind legs like the folded wings of a bird. 



The first almost entire femur of Cetiosaurus longus was obtained mainly through the 

 personal care and supervision of Hugh E. Strickland, M.A, then (1848) of Merton 

 College, from one of the divisions or thin bands of the 1 Great Oolite ' underlying the 

 Cornbrash near Enslow Bridge, north of Oxford. At the request of Dr. Buckland I 

 inspected this specimen at the Geological Museum, in the ' Clarendon,' Oxford, and by 

 the light of fragmentary specimens from other Oolitic localities and correspondence of 

 texture with the vertebral bones, especially those from Chipping Norton, I referred it to 

 the Cetiosaurus medius. This determination was accepted by Mr. Strickland in his 

 exhibition of the specimen to the Ashmolean Society, March 20th, 1848. The length of 

 this femur is 4 feet 3 inches. 



In 1868 the femur of a larger individual of Cetiosaurus, and in 1870 other bones 

 with vertebra? answering to those of Cetiosaurus longus, were discovered in the same 

 quarries, close to the railway-station for Kirtlington, eight miles north of Oxford. Pro- 

 fessor Phillips having notice of the first discovery took the requisite steps, with his 

 wonted energy, to prosecute the quest and secure for his science the evidences of the 

 monster dragon. 



The thigh-bone, first come upon, " was found to be lying on a freshly bared surface 

 of the Great Oolite, nearly in the line of a natural fissure, and covered by the laminated 

 clay and thin oolitic bands which there occupy the place assigned to the Bradford Clay 

 of Wiltshire." 1 



1 1 Geology of Oxford,' p. 247-8. 



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