Jackson.] 306 [June 21, 



There are sixty-three vertebrae, fifteen of which are dorsal. The 

 last rib on the right side had an ununited fracture, and many others 

 on the same side bore an anomalous protuberance near the head of 

 the rib, which was very suggestive of injury. The animal was briefly 

 described and thoroughly measured before dissection by Mr. J. A. 

 Allen, and drawings were made by Mr. J. H. Blake, both of the 

 Museum of Comparative Zoology. These drawings and notes have 

 been put very handsomely at my disposal by Mr. Allen. 



The length was 48 ft. The circumference of the head at the eye, 

 23 ft. 8 in. The magnitude of the dissection and the decomposed 

 state of the carcase, prevented any careful examination of the soft 

 parts, but the skeleton is very complete. Both pelvic bones, each 

 with a rudimentary femur have been preserved, as well as all of the 

 bones of the hyoicl apparatus. 



It is hoped that the skeleton will be mounted in the course of a few 

 months, and it will be minutely described in the Memoirs. 



Dr. C. T. Jackson read the following final report on the 

 Frozen Well in Brandon, Vt., in behalf of the committee 

 appointed to investigate the phenomenon. 



REPORT OX BRANDON FROZEN WELL. 



Twelve years ago Mr. John H. Blake called the attention of this 

 Society to the curious fact of the existence of a well of water in 

 Brandon, Vermont, which remained frozen throughout the summer 

 months, and a Committee was appointed to make an examination of 

 this singular phenomenon. 



Uriah A. Boyden, Esq., of this city generously placed in the hands 

 of this Committee the sum of three hundred dollars, to defray the 

 expenses of their examination of this matter. The Committee con- 

 sists of the following gentlemen: William B. Rogers, John H. Blake, 

 Charles T. Jackson, and subsequently Thomas T. Bouve. 



Owing to other engagements some members of the Committee 

 were unable to visit the Frozen Well, but Messrs. Blake and Jackson 

 have steadily devoted their attention to the subject, Mr. Blake 

 performing by far the largest share of the work,while he was resident 

 in Brandon in charge of his iron and paint mines. 



The first explorations made by the Committee were on the 10th of 

 June, 1859, and they continued each year to visit and examine the 

 Frozen Well and the surrounding country for six years, and they 



