March 22nd, iSgS.] PROCEEDINGS. xxiii 



After demonstrating the action of the grating as appUed to a 

 prism, Mr. Thorp suggested a simple form of spectroscope on 

 this principle, which could be used for solar prominence 

 observations. 



Mr. F. J. Faraday opened a discussion as to the relative 

 mer-its of cane and beet sugar, and whether the effect of the 

 sugar bounties is to substitute an inferior for a superior sugar. 

 Several members took part in the discussion, the prevailing 

 opinion being that, while no difference can be detected chemically 

 or physically between the two sugars, cane sugar seems to be 

 distinctly superior in its sweetening and preserving qualities. 



Professor fi.LAMB, F.R.S., read a paper "On the Velocity 

 of Sound in a Tube, as affected by the Elasticity of 

 the Walls." 



The paper will be printed in full in the Memoirs. 



Ordinary Meeting, March 22nd, 1898. 

 James Cosmo Melvill, M.A., F.L.S., President, in the Chair. 



The thanks of the members were voted to the donors of the 

 books upon the table. 



The President read a description and exhibited two speci- 

 mens of Strombus {co7io?nurex) belutschiensis, just discovered by 

 Mr. F. W. Townsend off the Mekran Coast of Beluchistan. 



The description is printed as an Appendix to Mr. Melvill's 

 paper on " Further investigations into the Molluscan Fauna of 

 the Arabian Sea and the Persian Gulf," in the Memoirs. 



Professor S. J. Hickson, F.R.S., communicated a paper by 

 Miss E. M. Pratt, entitled "Contributions to our know- 

 ledge of the Marine Fauna of the Falkland Islands." 



The paper will be printed in full in the Memoirs. 



