218 TRANSACTIONS OF THE [MAY 7, 
LEAD. 
Galenite. A few modified cubic crystals obtained at the 
Turtle Bay quarry, 43d street, E. R. 
Small crystals from New Aqueduct Shaft, No. 27 (A. P. 
Bjerregard, 1887). 
ZINC. 
Sphalerite. In small amorphous masses, associated with 
pyrite, 45th street and Second avenue. 
In larger masses in dolomite, St. Ann’s avenue and 145th 
street. 
TITANIUM. 
Rutile. In slender prisms of a blood-red color, sometimes 
fasciated, at other times reticulated, noticeable in rocks of region 
embraced between Third and Fifth avenuesfrom 100th to 105th. 
streets. 
Large stout prism with interesting features found by Mr. A. 
Woodward, Central Avenue Quarry. 
In flat prisms, of a bluish irised tint, resembling sections of a 
watch-spring, found in veins of calcite in dolomite, St. Ann’s 
avenue and 145th street. 
In stout prisms of a dark color, Fort George. 
Sparingly, Eighth avenue and 104th street. 
In finely terminated prisms in dolomite, Harlem Canal. 
In incrustations or sheets, resembling copper, in crevices of 
albite, Fifth avenue and 104th street. 
URANIUM. 
Uraninite (?) 175th street and Eleventh avenue. 
Autunite(?). Reported as having been discovered at Fort 
George. 
IRON, 
Pyrite. In brilliant and perfect octahedral crystals, Kip’s 
Bay Quarries (S8.C.H.B.). 
In cubes with curved faces, the crystals often aggregated in 
masses, 43d street, EK. R. 
In drusy cubic crystals with brilliant lustre on stilbite, 45th 
street and Second avenue. 
In flattened cubes between leaves of muscovite (J. J. Fried- 
rich, M.D.), E. 43d street. 
Globular, one specimen, also a pentagonal dodecahedron. 
45th street and Second avenue. 
Fine examples of the cube with octahedral and trapezohedral 
planes, some of about one inch in diameter, were found at the- 
