1068 PROCEEDINGS OF THE SOCIETY. 



Mr. J. Miiyull, jun., said it would, of course, be very difficult to discuss 

 so many points as those mentioned by Prof. Govi off-hand, because his 

 paper was evidently the result of very considerable research and would 

 require careful consideration. Many of his quotations were, of course, 

 well known to those who had made investigations into the history of the 

 Microscope, but there was one which seemed of rather more importance, 

 in which Galileo excused himself in 1G20 for not sending the instrument 

 ou account of its not being completed at that time. Another point was 

 with regard to its being called a compound Microscope, when it had a 

 convex lens at one end and a concave lens at the other. The modern 

 definition of a compound Microscope was that the image projected by the 

 objective should be examined by an eye-lens. In the so-called Briicke 

 lens the object itself was seen, and not the aerial image. He thought, 

 therefore, that Prof. Govi should more strictly define what he meant by 

 a Compound Microscope. As to Galileo making lenses with the magni- 

 fying power assigned, he could only say that he was not impressed with 

 the idea that any such power as 36 was obtained w ith the instruments in 

 the Museum at Florence. He hoi)ed to be able to submit to Prof. Govi 

 some considerations as to the possibility of getting 36 diameters with 

 such an arrangement, and if it was as he imagined, it might lead the 

 Professor to modify his opinions. 



The Chairman announced that the Society's next Conversazione would 

 be held on Wednesday, the 28th inst. 



The following Instruments, Objects. &c., were exhibited:— 

 Mr. Ahrens : — Erecting Dissecting Microscope. 

 Dr. Bate : — Case for Cover-glasses. 



Mr. Crisp: — (1) Portable Microscope in heavy brass box ; (2) Ahrens' 

 large Microscope for polarizer, with large field. 

 Mr. F. Kitton ; — Navicula venustisshna n. sp. 



New Fellows :— The following were elected Ordinary Fellows : — 

 Messrs. Alfred D. Bell, Frank Inskipp, C. A. Macallum, M.A., E. Macer, 

 E. W. A. A. Mayhew, Charles Eousselet, and George H. Wright; and Prof. 

 George James Allman, F.E.S., was elected an Honorary Fellow. 



