Miscellanies. 171 
7. Emmonite, a new mineral species; by Tuomas Tomson, 
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 
Jateral faces of a Right Rhombic Prism. An approxmate meas- 
urement on cleavage faces gave 118° 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, eeu see 1.00 
Miedites? i852 Leja bea eis oe 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 
