196 Scientific Intelligence. 



4. Eaton Galena, Id. — Three specimens of the ore from Eaton, 

 N. H. presenting different structures, were separately cupelled with 

 care. 300 parts of the broad and small foliated, each gave .634 

 parts, or .2113 per 100 of pure silver. 300 parts small granular, 

 left a few grains of quartz, with 6.19 parts of pure silver. If judi- 

 ciously worked, this ore would doubtless yield more silver, than the 

 Hartz ores. 8400 parts of the lead from that ore, equal to about 

 12400 parts of picked ore, are stated to yield from 12 to 15 parts of 

 silver slightly alloyed. Taking the above results, 12400 parts of the 

 ore from Eaton, would give a mean quantity equal to 26 parts pure 

 silver. 



5. Description of a new locality of zircon, particularly referring 

 to its geological character, by Win. Meade, M. D. ; in a letter ad- 

 dressed to the Editor, dated JVewburgh, Sept. 18, 1829. — While on 

 an excursion this summer, through part of the Highlands in the county 

 of Orange, state of New York, I was presented with a specimen of 

 iron ore, which had been obtained from the neighborhood, where a 

 shaft had been dug many years ago, in an unsuccessful attempt to 

 discover a productive mine of that mineral. The specimen was evi- 

 dently similar to that species of magnetic oxide of iron or the fer 

 oxidule of Haiiy, which I have described in a former number of 

 this Journal ; and which is abundantly disseminated in these moun- 

 tains, being that with which the principal forges are suppUed for the 

 manufacture of their best iron. On examining the specimen with 

 some attention, I found crystals of zircon imbedded in it in all direc- 

 tions, which induced me to visit the place where it had been obtained, 

 which I found was in the mountainous part of the town of Cornwall, 

 called Deer Hill, from the numerous herds of deer that formerly oc- 

 cupied these mountains. Here I observed, that a considerable quan- 

 tity of this ore had been raised from a pit which had been opened 

 only to the depth of eight or ten feet : these blocks lay scattered on 

 the surface of the ground, and from being exposed to the atmosphere 

 for many years, were much disintegrated, and their matrix which 

 was gneiss, was quite decomposed and brittle. On examining these 

 specimens, which differed only from the oxidulated iron ore of that 

 neighborhood in being more friable, I found numerous crystals of 

 zircon imbedded in it, some of them so loosely invested in their ma- 

 trix, tliat tliey scarcely adhered to it, but fell out on being handled, 

 leaving the cast or model of tlie crystal quite smooth, and so perfect 



