NATURAL SCIENCES OP PHILADELPHIA. 181 



of that end into a strong solid basal angle, and the expansion of the inner 

 basal outline. The angle formed by the meeting of the inner and nnder faces 

 of the bulla is more acute, from the greater flattening of the former. 



These differ as much from Balsena mysticetus angulata,* Gray. The long 

 section of the opening is narrower, and the short portion shorter ; the external 

 basal angle opposite this portion, as well as the "pocket, is not represented in 

 Gray's figure. The former feature, with the greater prominence of the long 

 external inflations at the other end, gives a very different inferior view, from 

 the greater breadth, etc. The characteristic angle of Dr. Gray's figure is also 

 wanting in the Salem species or variety. 



Another bulla from Mus. Salem (No. 113) is narrower on the inferior view 

 than even the cisarctica, and the outer lip of the opening is considerably 

 higher. The inner inferior outline below the long process is very obliquely 

 truncate, and the outer prominence near it is directed more outward. The 

 inner or thick lip is not heavy, and is much plicate. The inner inferior com- 

 pressed margin is much less flattened than the other Salem variety, (111 112.) 

 Locality unknown. 



October 3d. 

 Mr. Cassin, Vice-President, in the Chair. 

 Fifteen members preserjt. 



Dr. Leidy observed that the fine specimen of Cryolite, presented this evening 

 by Edmund A. Souder, Esq., was from Ivigtut, Aiksuk Fiord, Greenland, and 

 was a sample from a ship load, one of a number of similar loads imported to this 

 place for the manufacture of soda alum. 



Prof. Carson stated that he recently had an opportunity of ascertaining the 

 plants from which the so-called American Tea is made. The variety called 

 Green Tea is the product of the Ctanolhus Amtricanus ; the Black Tea, the pro- 

 duct of the Lysimachia quadrifolia. 



The death of Dr. Francis M. Moore, member of the Academy, was 

 announced. 



October 10th. 



The President, Dr. Bridges, in the Chair. 



Twenty-four members present. 



Dr. Leidy made some remarks in relation to the specimens of oolitic phos- 

 phates of lime and alumina, from the Island of Navassa, W. I., presented this 

 evening. The material, he stated, was imported in large quantities to this 

 place, by Messrs. Potts and Klett, and was employed in the manufacture of a 

 fertilizer. The mineral presents several varieties of color, but is especially 

 remarkable for its constitution, resembling that of ordinary oolite. Dr. L. sup- 

 posed that it was probably of organic origin, though the reverse opinion was 

 held by persons of judgment. 



Dr. Leidy further called the attention of the members to a collection of bones 

 and stone implements, presented this evening by Mr. Frederick Klett. The 

 remains were obtained from the Island of Orchilla, W. I., from a deposit of 

 guano, eight inches below the surface. The bones are parts of three human 



* Proc. ZjoI. Soc. 1S64, 201. 



1865.] 



