392 Scientific Notices — Mineralogy. [Nov. 



Limpid quartz, in good crystals at Saratoga Springs, and at 

 Sand Lake, New York; and the following chiefly in Massa- 

 chusetts. 



Blue quartz, ferruginous quartz, fetid quartz, chalcedony, 

 hornstone, grey and red jasper, prismatic mica, black tourmaline 

 in milky quartz, silver-grey scapolite, black hornblende, graphite, 

 and oxide of manganese. 



Mr. Steuben Taylor found feldspar in large crystals, actyno- 

 lite in potstone, graphic granite, and ferruginous quartz, at Berk- 

 hampstead ; black mica and prismatic mica, at Hartford ; 

 radiated quartz, at Canton ; kyanite, at Chatham ; garnets in 

 mica slate, at Middle Haddam ; epidote and gneiss, at Plain- 

 field ; galena, at White Creek (N. Y.) ; smoky quartz, at Kil- 

 lingly ; ferruginous sand in great abundance at Black Island ; 

 and green talc, at Smithfield, R. I. 



To this list we shall add some other localities given by Dr. 

 Emmons. 



Siliceo-calcareous oxide of titanium (sphene) in oblique four- 

 sided prisms, of a light brown colour, associated with augite and 

 actynolite, and also in sienite, at Chester. 



Phosphate of lime, in an aggregate of grey epidote, zoisite, 

 hornblende, and quartz, same place. 



Manganese, chabasie, stilbite, carbonate of lime, in various 

 forms, at Cummington ; beryl, at Norwich and Chester,- in an 

 aggregate of carbonate of lime, chlorite, and feldspar; prismatic 

 and tabular mica, indicolite? garnets and staurotide, of every 

 variety, in mica slate, Norwich. A curious variety of cyanite 

 occurs here, in a very fine soft mica slate (resembling potstone), 

 often in hemitrope crystals, colour, greyish blue ; also ferrugi- 

 nous oxide of titanium (nigrine?) in granite, and oxide of tita- 

 nium (titanite?), in flat plates, in mica slate. 



Augite abounds here in amorphous masses. 



Sahlite and coccolite occur in mica slate ; magnetic oxide of 

 iron is abundant in mica slate, serpentine, &c. ; rhomb spar is 

 found in dolomite at Middlefield, and a large mass or rock of the 

 rhomb spar of the same place, contains fibrous tremolite. 



Aaate, at Chester, a laro-e mass found near the village in the 



O ' *m •mm • i * 1 1 



sand. It consists of yellowjasper and chalcedony, and weighed 

 upwards of 180 lbs. after several large fragments had been broken 

 off. Another large mass of the same materials, partly agatized, 

 almost twice the size of the preceding, was found near the same 

 place. — (American Journal of Science.) 



13. Vesuvian Minerals. (Extract of a Letter from Signor Mon- 

 ti celli.) 

 The torrents of water which followed the eruption of Vesuvius 

 in 1822 exposed several minerals, some of them new, to view. 

 They consist of lapis lazuli, found in the midst of the red sand, 



