xxii Proceedings. [February I'/th.igoj. 



" quelli occhiali che V. S., quasi nuovo et celeste Americo, have 

 " rivolto al cielo ; ho fatto, dico, uno telescopic a due occhi, come 

 " li altii sono ad uno : il corpo e poco, e di figura ovale." 

 [Trail si at ion : I have made a new kind of map of the world by 

 putting the whole globe flat in a circle, a thing which nobody 

 has done before. I have made one of those eye-glasses that 

 you — like a new and divine Americus — have directed to the 

 heavens ; I mean that I have mnde a telescope with two eyes, 

 while the others have one ; the body is small, and oval in shape.] 



Mr. Thomas Thorp, F.R.A.S., showed a copy of a Japanese 

 magic mirror he had cast. He had hnd it ground and polished 

 with a partial vacuum behind it, with the result that the 

 reflection showed the design on the back of the mirror very 

 distinctly. Mr. Thorp believed this to be the first mirror to be 

 made in that way, and he afterwards presented the mirror to the 

 Society. 



Mr. Thorp also exhibited a small apparatus for attaching to 

 a gun to facilitate sighting. Two images — one normal and the 

 other inverted — of the object sighted are seen through the 

 instrument, and the gun is accurately sighted when the two 

 images are made to coincide. 



Mr. W. E. HoYLE, M.A., showed on the lantern screen a 

 number of microscopic sections illustrating the structure of the 

 luminous organs of a cuttle-fish which he had described to the 

 Society during the previous session. The sections showed that 

 these organs, which are situated under the eyes, at the roots of 

 the gills, and in the siphon, are of very complex structure. In 

 the centre is a granular mass, supplied with nerves, which is 

 believed to be the source of light. Behind is a kind of mirror 

 composed of superposed scales, and in front a convex lens. 



Mr. HovLi': also read a paper entitled, " Notes On the 

 Type Specimen of Loligo eblanae, Ball," in which was 

 demonstrated the identity of a Squid from Dublin Bay, descrit^ed 

 by the late Dr. Robert Ball, with one recorded by M. Girard 

 from the coast of Portugal and also found in the Mediterranean. 



