1861.] 283 



ings of quartz veins in primary schists and in vertical posture may be 

 studied in the first rock-cutting north of Old York Station on the 

 North Pennsylvania Railroad, about eight miles out of town. In 

 this latter case the quartz seams are perfect for so great a length, and 

 the curves are so sharp, unbroken, close, and numerous, that one is 

 tempted to give up further search for evidence against the possibility 

 of any kind of igneous origin for them; while it is equally evident 

 that the curvature was effected after infiltration, but before the pre- 

 sent rock-crystal condition of the seams had been assumed; that is, 

 while the quartz had as yet a quasi gelatinous consistency. Some of 

 these seams of an inch in thickness, now packed up in a space three 

 yards high by one yard broad, would if stretched out straight mea- 

 sure ten or twenty yards in length. 



Pending nominations Nos. 423, 424 were read. 

 And the Society was adjourned. 



Stated Meeting, October 4, 1861. 



Present, six members. 



Dr. Franklin Bache in the Chair. 



Letters were received from the corporation of Yale College, 

 dated Sept. 1861 ; the Boston Public Library, dated Oct. 1, 

 1861 ; and from Mr. J. W. Nystrom, in relation to a new- 

 system of arithmetic, weights, measures, and coins. 



Donations for the Library were received from the London 

 Zoological Society, the Boston Public Library, the Medical 

 News, Prof. Cresson, and the Chevalier Bonghi of Naples. 



The MS. of Mr. Nystrom was referred to a committee, con- 

 sisting of Mr. Dubois, Prof. Kendall, and Prof. Cresson. 



Pending nominations 423, 424 were read. 



The resignation of Dr. J. J. Reese was accepted. 



And the Society was adjourned. 



