1855.] 409 



October 2d. 

 Vice President Lea in the Chair. 



Dr. Rand remarked relative to the specimen of Cyanide and Nitride 

 of Titanium, presented this evening, that it was obtained from the 

 Salamander of a blast furnace at Spring Mill, from a mass estimated 

 to weigh over a ton. 



Mr. Isaac Lea read an extract from a newspaper, relative to the sup- 

 posed human foot-prints in the New Red Sandstone of Middletown, 

 Conn. The article was written by Prof. B. Silliman, Jr., who believes 

 the impressions to be due to curvature of the strata at the time of forma- 

 tion, and not to be tracks. Prof. Johnston believes them to be tracks, 

 but they are certainly not human. 



October 9th. 

 Vice President Bridges in the Chair. 



Letters were read 



From Senor F. A. Sauvalle, of Havana, dated 25th July, 1855, ac- 

 knowledging the receipt of his notice of election as a Correspondent, 

 and transmitting the donations announced this evening. 



From the Imperial Royal Institute of Science, &c, at Milan, dated 

 22d June, 1855, acknowledging the receipt of the Proceedings, and 

 transmitting its publications in exchange. 



From the Imperial Academy of Sciences of Bordeaux, dated 26th 

 Dec, 1854, acknowledging the receipt of the Proceedings, and trans- 

 mitting its publications. 



From the Imperial Society of Naturalists of Cherbourg, dated 14th 

 Nov., 1854, acknowledging the receipt of the Proceedings. 



Mr. Ashmead presented a paper for publication in the Proceedings, 

 entitled " Catalogue of Marine Algse, from Beesley's Point, N. J., 

 with some remarks." Referred to Dr. Leidy, Dr. Zantzinger and Mr. 

 Durand. 



On motion, it was unanimously resolved, that the thanks of the 

 Academy be presented to Senor F. A. Sauvalle, of Havana, for the 

 donation of Shells received from him, and announced this evening. 



October 16th. 

 Vice President Bridges in the Chair. 



Letters were read 



From the Royal Danish Society of Sciences, dated Copenhagen, 8th 

 May, 1855, accompanying their donation announced this evening, and 

 also acknowledging the receipt of the Proceedings. 



From the Royal Academy of Sciences of Stockholm, dated 23d Oct., 

 1854, and 31st May, 1855, accompanying their donation. 



Dr. Leidy presented a paper for publication in the Proceedings, en- 



