+ 
Pror. A. R. LEEps read a paper ‘‘On the Spectroscopic 
Examination of Silicates,” published in the Annals, vol. x, 
No. 11, pages 824-330. 
Dr. I. WALZ commenced the reading of an extended paper 
entitled ‘“ Contributions to a General Theory of Solubility.” 
The hour of adjournment having arrived, Dr. Walz was re- 
quested to finish the reading of the paper ata future meeting ; 
as the discussion was one of such interest that more time, and 
the opportunity of a full exchange of views upon the subject, 
would be highly desirable. 
March 17th. Geological Section. 
President Newberry inthe chair. Twenty persons present. 
Dr. FEUCHTWANGER announced the death of Professor 
John Torrey, of Columbia College, the last of the original 
imeorporators of the Lyceum. On motion, it was resolved that 
a committee be appointed to prepare a series of resolutions 
expressive of the esteem felt by the members of the Lyceum 
for the deceased, and also to suggest some suitable mode in 
which to commemorate the life and services of their late 
associate. 
The PRESIDENT appointed Prof. B. N. Martin, Dr. Feucht- 
wanger, and Mr. Dinwiddie, as such committee. By request, 
the President was added as a fourth member. 
Dr. FEUCHTWANGER exhibited a specimen of lazulite from 
Africa, of a deep green color upon one axis, and pale green 
upon another, and differing from the North Carolina speci- 
mens in possessing a vitreous luster. He made some 
accompanying remarks upon the characters and distribution 
-of lazulite. 
Dr. B. N. Martin exhibited a specimen of the sword of 
‘Celorhyncus ornatus, Leidy, the fossil sword-fish, from the 
4 Upper Marl Bed” (Kocene) of Farmingdale, N. J. 
The PRESIDENT made some remarks on the occurrence of 
this species. 
