220 TRANSACTIONS OF THE [MAY 7, 
street. In masses of rhombohedral crystals of dull color and lus- 
tre, 59th street, Kighth avenue. In reticulated crusts, light gray 
color, 44th and 45th streets, Second avenue. 
Spherosiderite. In globes and lenticular forms, very many 
of which are twinned, Fourth avenue, 85th street. Also in 
globes one-half inch in diameter, 45th street, Second avenue. 
MANGANESE, 
Manganese (Bog). Near the city. Old record. 
Dendritic Wad on orthoclase. High Bridge. 
Triphylite (?). Central Park, near Seventh ave. (S.C. H. B.). 
Allwadite (?) Fourth avenue (S. C. H. B.). 
ALUMINIUM. 
Chrysoberyl. In small crystals on orthoclase, High Bridge 
(Niven, Hidden). 
Kalinite. In whitish lumps and efflorescence on rock surfaces, 
especially just after a rain. 
East 5%th street, near East River; East 42d street, near Tun- 
nel; 160th street, Eleventh avenue ; yellow variety, 68th street, 
Eighth and Ninth avenues. 
Copper Alum. Precipitating copper on a knife blade in a weak 
solution (W. E. H.). 
CERIUM, YTTRIUM, ERBIUM, LANTHANUM, DIDYMIUM. YTTROCERITE. 
Fluocerite. One specimen, Fourth avenue and 90th street 
(Witt: Tl): 
Monazite. One or two crystals of remarkably fine form, 
Washington Heights, 1888 (Niven, Hidden). 
Xenotime. Described by W. E. Hidden, who found a single 
erystal in 1872 at Tenth avenue and 155th street, showing planes 
1, I, 3-3. 
Several crystals found in the spring of 1888 by Mr. Niven had 
long, square prisms, with bright terminal faces, and were identi- 
fied as xenotime by Mr. Hidden. ‘These were less than 4 inch 
in diameter, and about } inch in length. From 155th street and 
Tenth avenue. 
CALCIUM. 
Fluorite. In yellow and blue cubes } inch in diameter, on 
gneiss at the Hell Gate excavations (cited by W. E. Hidden). 
