386 



Society, and express its warm gratitude for his most liberal 

 donation. 



On motion of Mr. Bouve, the thanks of the Society were 

 given to Dr. J. C. AYhite for his constant care and interest 

 manifested in arranging this large collection. 



Prof. A. E. Verrill exhibited specimens of ores from the 

 metalliferous region of Northern ^NTew Hampshire, among 

 them quartz containing a large amount of copper pyrites, 

 with a little native copper and mispickel from Franconia, 

 which, with the beds of magnetic iron ore at this locality, oc- 

 curred conformably with nearly vertical strata of hornblendic 

 and micaceous schists, which at the summit of the iron ore 

 hill formed an anticlinal axis. At a locality about a mile 

 from Lisbon, a vein four or five feet thick has been opened, 

 and is stated by the agent to yield |60 per ton in practical 

 working. Several specimens containing visible gold, were 

 exhibited from this place. At Moulton Hill, five miles from 

 Lisbon, N. H., an auriferous quartz vein occurred in connec- 

 tion with similar metamorj^hic rocks as were found at Lisbon. 

 On the surface of this quartz vein a considerable amount of 

 argentiferous galena occurred, which, however, became nearly 

 exhausted in going fifteen feet into the vein. 



These rocks are apparently of lower Silurian age, perhaps 

 members of the Quebec Group of the Canadian geologists. 

 Among them are Quartzites, micaceous schists, containing in 

 abundance large crystals of Staurotide, clay slates, lime- 

 stone, etc. These occur largely in Vermont and Canada, and 

 a wide belt of similar rocks passes through the State of 

 Maine. Several other veins containing Galena and copper 

 pyrites, have been opened in the vicinity of Lisbon. 



Mr. N. S. Shaler made a communication on the formation 

 of mountain chains. 



The President read a letter from Dr. B. A. Gould, present- 

 ing in behalf of the U. S. Sanitary Commission, a complete 

 set of measuring apparatus, consisting of an andrometer, 

 spirometer, dynamometer, calipers, etc. 



