1862.] 2Q9 [Lesley. 



West may be made somewhat more than possible. The zone of sedi- 

 ment, when taken along its isometric axis, is equal enough over a 

 priori incredible distances. Logan and Hunt and Murchison- are 

 finding the Quebec group, the Huronian and Laurentian systems in 

 Scotland and Scandinavia, not by fossils, but by aspect. No one 

 doubts the extension of the Millstone Grit and the Mountain Lime- 

 stone of England to Pennsylvania. Why should the remarkably 

 homogeneous and continuous Flora of any one of the immensely out- 

 spread beds of the United States not be homogeneously continuous to 

 Rhode Island, New Brunswick, and Cape Breton ? 



One remarkable feature, however, in this resemblance of the two 

 coal columns at Pittsburg and Sydney, must not be forgotten. I 

 refer to the mass of red shales which cap the Glace Bay section. A 

 similar deposit occurs, at a fixed horizon, widely spread over Western 

 Pennsylvania, but beneath, not above, the High Main coal. 



Dr. Wood noticed a visit which he and Prof. Henry had 

 made to Dr. Wistar's house, since the meeting of September 

 19th, to re-examine the lightning rod connections, and they 

 found this case to be no exception to the general rule, that 

 where the connections are perfect, the building is secure. Dr. 

 Bache described the connections of his house-rods at the cor- 

 ner of Spruce and Juniper Streets, with the city gas pipes. 



And the Society was adjourned. 



Stated Meeting, November 21, 1862. 

 Present, seventeen members. 

 Judge Sharswood, Vice-President, in the Chair. 



A letter accepting membership was received from T. J. Lee, 

 dated Washington, November 11, 1862. 



A letter announcing the decease of M. Edmi-Fran^ois Jo- 

 mard, at his residence in Paris, September 23d, 1862, aged 

 85, was received from his son and other relatives, dated Paris, 

 September 30, 1862. 



VOL. IX. — P 



