252 Me. Hunt on the Cinephantic Colour Top. 



(ITrcasurcr. 

 Mr. William Cockev. 



Soint-Sectetartes. 

 Me. Alexat^der Hastie. I Mr. William Kedbte. 



Council. 



Me. J. P. Frasee. 

 Me. Geoeoe Anderson. 

 Me. John Condie. 

 Me. James Coupee. 

 Professor Wm. Thomson. 

 Me. Walter Ckxim. 



Me. Robert Blackie. 

 Me. George Smith. 

 Dr. Francis H. Thomson. 

 Mr. Ebmund Hunt. 

 Me. James E. Napiee. 

 Proeessor Eogers. 



Professor William Thomson submitted to the Society a proposal 

 which had this evening been deliberately considered and recommended 

 by the Council, that the Proceedhujs of the Society should be printed 

 and issued fortnightly, instead of annually, or at longer intervals, as 

 heretofore ; the members to be supplied with a copy of the publication, 

 containing the Proceedings of the previous meeting, along with the 

 billet intimating the next meeting ; that extra copies be printed and 

 preserved for the members, to be delivered in a complete form at the 

 close of the session ; that the number of honorary members of the 

 Society be increased by the election of men distinguished in the 

 different departments of science ; and that copies of the fortnightly 

 pubUcation be regularly sent to the honorary members. The Society 

 approved of the proposal, and remitted to a committee, of which Pro- 

 fessor William Thomson was appointed convener, to mature a plan for 

 carrying it into effect. 



On the Cinephantic Colour Top. By Mr. Edmund Hunt.- 

 Mr. Hunt again exhibited the Cinephantic* Colour Top. The fol- 

 lowino- is the substance of Mr. Hunt's explanation and description of 

 the experiments : — The writer was led to make his experiments by hear- 

 ing an imperfect account of some exhibited in London, and which 

 afterwards proved to have been made with Mr. Gorham's Kaleidoscopic 

 Colour Top, described in Vol. VII. of the Microscopjical Journal. At 

 the time, however, all he could make out clearly was, that a colour top 

 similar to Professor Maxwell's was used, a black disc, perforated with 

 various patterns, being carried loosely by the spindle a short distance 

 above the coloured disc. The motion of this loose disc was retarded 



♦ The term Cinephantic is used to distinguish Mr. H.'s modification from Mr. Gorham's 

 Kaleidoscopic Top, and from other colour tops ; and signifies " producing apparent 

 motions," or " producing optical phenomena by motion." 



