PROCEEDINGS OF SOCIETIES. 113 



Mr. Beck's Cabinet was accompanied by a letter addressed to 

 the President, in the following terms : 



Mt deae Sir, — I beg to offer for the acceptance of tlie Eoyal Micro- 

 scopical Society a collection of bones and teeth made by me many years ago, 

 when Professor Qnekett was preparing for the publication of ' Part 11 Histo- 

 logical Catalogue.' The collection contains 424 specimens, and is pretty 

 nearly complete. It originally formed part of a collection in oia* Microscopical 

 Subscription Room, and the slides have on them a monogram, whicli, however, 

 by a liberal interpretation might be considered to imply Royal ?.Iicroscopical 

 Society. I am so much occupied in business that I am but seldom able to look 

 at them, and therefore I have ventured to offer them to the Society in the 

 hopes that they may be useful. — Believe me, dear Sir, yours sincerely, Jos. 

 Beck. 



A gentleman, through H. Lee, Esq., engaged to present the 

 Society with a complete series of objects, illustrating some special 

 department of microscopy, to the extent of £20, hoping thereby 

 to induce others who may have the means, to aid iu fully furnish- 

 ing the cabinet of the Society. 



The following gentlemen were duly elected Fellows of the 

 Society : — Edward Thompson Draper, Arthur Waller, John 

 Wheldon, Alfred Sangster, Wra. Barnett Burn. 



Mr. Slack called attention to a microscope which Mr. Crouch, 

 of London "Wall, had kindly sent for the Society's inspection. It 

 was a new modification of his " Cheap Binocular," as it was termed 

 in his catalogue, and was fitted up with a very excellent rotatory 

 stage of black glass, slightly modified from the form constructed 

 by Nachet, and which Dr. Carpenter had highly commended. The 

 rotation movement resembled that of Beck's well-known popular 

 microscope. The object-holder was fitted to a glass plate, and 

 moved very smoothly on the glass stage in any direction, being 

 kept in its place by ivory points attached to brass springs, pressing 

 upon it with sufficient force. This form of stage was adapted to 

 all ordinary requirements, but when zoophyte troughs were used 

 it did not give quite enough vertical motion. It w^as, however, 

 easy to add to the instrument a simple trough-holder, which 

 would obviate the difficulty. The instrument as a whole was well 

 worthy of attention, and decidedly one of the best of the cheaper 

 forms. 



Mr. C. Collins introduced a new metallic chimney for micro- 

 scope lamps, made by him for Mr. Eiddian, of Birmingham. The 

 interior of the chimney is coated with plaster of Paris, and it 

 emits a beautiful white light, in one direction only, through a 

 circular aperture in the metal, to which a flat piece of glass is 

 attached. The combustion appears to be more perfect than it is 

 with the ordinary glass chimneys. The opaque sides of this chim- 

 ney act as a screen, intercepting all rays excepting those actually 

 required for use. 



A paper was read by Dr. Collingwood, E.L.S., &c., " On the 

 Algae which cause the Colouration of the Sea in various parts of 

 the World." (See ' Trans.,' p. 85.) 



A discussion followed the reading of this paper, in which the 



