Mneralogy, Geology, &c. 55 
Red Oxid of Titantum—Is found by Mr. Lane in the 
vicinity of his mine at Huntington. The crystals are occa- 
sionally as large as the thumb, and larger. They are often 
geniculated, and possess in their fracture a high resinous 
lustre, and a dark reddish brown colour. They often come 
out in irregular masses, and might then at first be mistaken 
for garnet. 
Sulphate of Lead.—On page 173, vol. III. we mention- 
ed a remarkable argentiferous galena found at Huntington, 
in Mr. Lane’s mine. Connected with this galena is an in- 
crustation of sulphate of lead. It is tolerably abundant, but 
is no where in crystals or in masses: it occupies merely 
the surface and cavities of the other ores of lead. It gives 
metallic lead instantly by the blow-pipe, but does not effer- 
vesce nor dissolve in acids. According to Mr. Lane, it is 
equally rich in silver as the galena. This, if correct, is we 
believe a new fact; but we have not examined the ore in 
this respect. 
Black Tourmaline—Well crystalized in quartz, from Dr. 
Porter, of Plainfield. 
Garnet Mass.—F rom the same. This remarkable mass is 
as large as a head, and composed entirely of garnets, individu- 
ally about a quarter of an inch indiameter. They are trape- 
zoidal and rhomboidal : often translucent and rich in col- 
our, and truncated deeply on the solid edges. ‘They are 
either in mere juxta position, or cemented by hyalin quartz. 
Green Mica, Hinsdale, Mass.—Dr. Jacob Porter. 
Dr. Webster has discovered Hyperstene in abundance in 
the vicinity of Boston. 
We have many other localities on hand, and some of them 
are sufficiently interesting, but they must be postponed to 
another number. 
