Miscellanies. L71 



7. Emmonite, a new mineral species; by Thomas Thomson, 

 M. D., F. R. S., Prof. Chem. Glasgow.— This mineral was received 

 by Dr. T. from Prof. Emmons, of Williams College, Massachusetts, 

 after whom it is named. The color of the mineral is snow-white; 

 structure obscurely foliated, with imperfect cleavages parallel to the 

 lateral faces of a Right Rhombic Prism. An approxmate meas- 

 urement on cleavage faces gave 113° for the obtuser angle of 

 the prism. Fracture in the direction of the cleavage planes, flat 

 and smooth ; but the mineral in general had a scaly appearance, 

 not unlike some varieties of gypsum, translucent on the edges, very 

 easily reducible to a powder. Hardness, 2.75 ; specific gravity, 

 2.9463. 



The analysis of Dr. T. gives for its composition 



Carbonate of Strontian, - _ _ 82.69 

 Carbonate of Lime, _ _ _ 12.50 

 Peroxyd of Iron, - - - - 1.00 



Zeolite, 3.79 



99.98 

 and consequently it consists, neglecting the two latter ingredients, 

 of two atoms Carbonate of Lime, and nine Carbonate of Strontian. 



8. Retrospective Notice of the discovery of fossil Mastodon Bones 

 in Orange County, (N. Y.) 



(From a letter, addressed by Sylvanus Miller, Esq., to Hon. Dewitt Clinton, in 1815.) 



The first discovery of these bones was made about 1785, in the 

 town of Montgomery, in Orange County. In digging a ditch in a 

 miry meadow, to carry off the excess of water, several ribs and 

 teeth and a thigh bone, were discovered ; the ribs and teeth were 

 very sound. Remains of several skeletons were afterwards discov- 

 ered, and Mr. Peale, of Philadelphia, by great pains and expense, 

 succeeded in obtaining bones sufficient to construct two skeletons. 

 Mr. Miller contributed in an important degree to the success of these 

 undertakings. 



The only places where these fossils were found in this neighbor- 

 hood, were in the towns of Montgomery and Shawangunk ; the for- 

 mer in Orange, and the latter in Ulster county, about 80 miles from 

 New York, and from 6 to 12 from Newburgh on the Hudson river. 

 In low situations, the receptacles of vegetable and testaceous solu- 

 tions, the bones of the mastodon have been (at least as regards this 



