REPORT OF THE COMMITTEE. 285 



Nov. 24. " Further remarks on Fluid Cavities in Meteorites," by 



Mr. H. Hensoldt. 

 Dec. 22. « On Mounting in Glycerine," and "Making Cells of 

 Thin Glass," by Dr. H. T. Whittell. 

 1883. 

 Jan. 26. " On a New Form of Fructification in Vaucheria" by 



the President. 

 Feb. 23. " On an Undescribed Sponge of the Genus Hymeraphia" 



by Mr. J. G. Waller. 

 April 27. " Notes of the Excursion to Regent's Park and Caen 



Wood," by the President. 

 " On Preparing Insects for Transmission from Abroad," 



by Mr. Staniforth Green, of Ceylon. 

 May. 25. " Notes on the Excursion to Keston," by the President. 

 " On the Causes of some Errors in the Interpretation of 



small Microscopical Objects," by Mr. E. M. Nelson. 

 June 22. " On the Work accomplished by the United States 



Coast Survey and the Fish Commission," by Mr. 



Romyn Hitchcock, of New York. 

 In addition to these, the short communications have been more 

 than usually numerous and interesting, consisting principally of 

 descriptions of objects or apparatus exhibited, showing evidences of 

 good work, and offering opportunities for useful discussion. We 

 must still, however, regret the deficiency of more important papers, 

 which now mostly find their way to the larger Scientific Societies. 



Six elementary demonstrations on subjects connected with 

 microscopy have been given on the Conversational Evenings, and, 

 with one exception, were held in a class room, in order to avoid any 

 interference with the social intercourse of those meetings. The 

 following is a list of these Demonstrations : — 



1882. 

 Dec. 8. " The History of a Stained Section of an Animal 



Structure," by Mr. J. W. Groves. 

 1883. 

 Jan. 12. " Photo-micrograph}'," by Mr. T. Charters White. 

 Feb. 9. " Sea-side Collecting," by Mr. A. D. Michael. 

 Mar. 9. " Some methods of preparing parts of Insects for Micro* 



scopical Examination," by Mr. E. T. Newton. 

 April 13. " Microscopical Vision," by Mr. W. T. Suffolk. 

 May 11. "The Structure of Mosses," by Dr Braithwaite. 



