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better qualities had been found to yield as much as one 
hundred gallons of oil to the ton whilst the more inferior 
qualities gave seventy-five gallons of a similar oil to the ton. 
If it could be considered to be a true mineralogical species 
it had been proposed to call it Southworthite. It was well 
known in Brazil as “ Turba” and the locality where it occurs 
is deseribed by Prof. C. F. Hartt, in his recent book on that 
country. 
Pror. B. N. MARTIN exhibited the Humerus of some large 
animal, apparently a Buffalo. It had been lately found in the 
drift nine or ten feet below the surface, near Fox Hill, 
Hoboken, N. J. 
The specimen was referred to Mr. W. J. Hays for examin- 
ation and report. 
Pror. D. S. Martin exhibited specimens of Mica Schist 
filled with minute crystals of Kyanite, in such a way as to 
constitute a variety of the rock, that might be termed a 
Kyanite Gneiss. These pieces were obtained from the ex- 
cayation opposite to the new Union Depot on East 42d 
Street, where it occurs in considerable quantity, and is quite 
characteristic. There is also another locality of it, between 
45th and 46th Streets, West of Madison Avenue; and the 
rock is probably continuous from the one point to the other. 
The mineral Kyanite is not rare on New York Island; but 
its occurrence in this way, as a constituent of the rock, evenly 
and closely distributed over large areas, is quite peculiar. 
He also showed some specimens of Crystalline Limestone, 
from an excavation in East 124th St., which is indistinguish- 
able from that of the outcrop at Mott Haven, beyond the 
Harlem River, and similarly filled with minute crystals ot 
Mica, probably Phlogopite. He expressed his opinion that 
this bed of Limestone, intersected at a depth of some eight 
feet at this point, is the prolongation of the same ridge that 
appears at Mott Haven, and at a number of places in West- 
chester County, and that it probably comes to view at the 
summit of an Anticlinal. On the western side of the Lime- 
