MITCHILL ON THE TERRIBLE SNOW STORM IN 1811, 331 



And it was stated shortly after, that on the discontinuance of the 

 eruptions, Captain Tillard, commanding a British sloop of war on that 

 station, landed upon the new ground, and took possession of it in the 

 name of his sovereign, calling it, after the name of the vessel he navi- 

 gated, Sabrina island. He found it very steep. Its elevation between 

 two hundred and three hundred feet. The chief material, a sulphu- 

 reous dross of iron. Its circumference was estimated to be between 

 two and three miles, and was judged to be but a crater. The depth of 

 the sea in that place, before the island rose, was two hundred and forty 

 feet. 



The narratives of Captain Farwell, Captain Thomas, and Mr. 

 Neill, all of whom were spectators of the eructations of flames and 

 smoke, and the elevation of columns of water, may be seen in the 13th 

 volume of the Medical Repository, p. 98, 99. 



Hie History of that Extensive Commotion of the Atmosphere along the 

 Coast of North America, which commenced off Cape Hatter as, on the 

 23d of December, 1811, and progressed to Massachusetts Bay on the 

 Ikth, in the form of a northerly snow storm, causing an unusual number 

 of shipwrecks in Long-Island Sound. 



On several former occasions I have availed myself of my situation 

 to delineate the phenomena of the extensive tempests which afflict 

 occasionally the Atlantic coast. I refer to the account I gave of the 

 tremendous storm from the northeast, in February, 1802, (see Medical 

 Repository, vol. 5. p. 465 — 472.) and of the violent hurricane from thr 



