1851.] 309 



portions than that of the preceding, it is also more uniform in its breadth and 

 depth, and has a stron^i curve downards as in B. rorqual, Lac. It is very nearly- 

 flat internally and demi-cylindrical externally. The upper margin is angular but 

 not prominent, and forms the boundary between the inner and outer side. The 

 gingeval foramina, five in number in the specimen, are placed below the upper 

 margin internally, are about one line in diameter, and open very obliquely for- 

 ward into grooves almost horizontal, from half an inch to one inch long. The 

 labial foramina of which there are the remains of seven in the specimen, are 

 about half an inch external to the upper margin, are about two lines in diameter, 

 and open very obliquely forward. 



Measurementf! of the fragment. 

 Vertical diameter, ..... 3 inches. 



Transverse " . . . . . 2 * 



The caudal vertebra found associated with the above fragment, and which I 

 suppose to belong to the same animal, is adult, and indicates a larger species 

 than the B. palaeatlantica, for it is as large as the dorsal vertebra of the latter. 

 Its articular faces are subcircular, and are moderately convex. The transverse 

 processes and neural arch are broken away in the specimen, as is also the case 

 with the abutments of the chevron bone. The transverse processes have their 

 origin 11 inches posterior to the anterior articular face. 



Measurements. 



Length of the body, 6J inches. 



Breadth of anterior articular face, 6i " 



Depth " " " 6 



Breadth of transverse process, 4 " 



" neural arch, 3J *' 



" spinal canal, 7 lines. 



Dr. Fisher, on behalf of the Committee on the Memoir of Dr. Morton, 

 announced that it had been read by Dr. Meigs on Thursday evening last, 

 November 6th, 1851, at the Hall of the University of Pennsylvania. 



Whereupon the following resolutions were offered, and unanimously 

 adopted : 



Resolved^ That the sincere thanks of this Society are due, and are 

 hereby presented to Dr. Charles D. Meigs, for his able and highly ap- 

 propriate Memoir of its late President, Dr. Samuel George Morton, read 

 before the Society on the 6th inst., at the Hall of the University of 

 Pennsylvania. 



Resolved, That the Memoir be published, and that the Committee on 

 Proceedings have charge of the same. 



Novemher 18^7?, 



Vice President Bridges in the Chair. 



A letter was read from the Asiatic Society of Bengal, dated Calcutta, 

 May 9th, 1851, acknowledging the receipt of Part 1, Vol. 2, new seriea 

 of the Journal. 



