552 PROCEEDINGS OF THE SOCIETY. 



Mr. L. Dreyfus : 



Preparation of Synapta mounted by the Zoological Station, 

 Naples. 

 Professor M. Duncan : 



1. An acuate, entirely verticillately spined, spicule with enlarge- 



ments in the central canal : 'deep sea, Japan. 



2. Acuate hent at one end, enlargements in axial canal and radial 



penetrations from without. 

 Mr. F. Enoch : 



Tongue of saw-fly, Tnchiosoma lucorum, and of honey-bee, Apis 

 mellifica, showing the muscular structure. 

 Mr. W. H. Gilburt : 



Section of ovary of tulip, showing the division of primary nucleus 

 in the embryo-sac. 

 Mr. J. W. Groves : 



1. Testis, epididymis, and vas deferens of guinea-pig (in one 



section), stained with logwood and anilin green. 



2. Vertical section of cat's lip with tactile hairs, double stained. 



3. Spinal cord of monkey, stained with logwood, anilin black, and 



eosin. 

 Mr. J. Hood : 



Crista tella mucedo. 

 Mr. John Hunter : 



Longitudinal sections of the jaws of mole. 



Trichina spiralis from man. 

 Dr. Matthews : 



Images produced by diatoms and small perforations in tinfoil. 

 Mr. "Wm. Moginie : 



Live Podurce. 

 Mr. A. D. Michael : 



Living specimens of Leiosoma pahnicincta (inert stage before 

 ecdysis) and Dermaleichus heteropus n. sp. 

 Mr. Edward M. Nelson : 



Surirella gemma with Powell and Lealand's oil-immersion -^^ by 

 direct light and achromatic condenser. 

 Messrs. Powell and Lealand : 



AmpJiijjleura pellucida with oil-immersion \ having a numerical 

 aperture of 1-47 in crown glass = (angle 150°) and vertical 

 illuminator. 

 Mr. B. W. Priest : 



Palate of Pleurohranclius memhranaceus. 

 Mr. G. J. Smith : 



Sections of dolerite with unaltered olivene and syenite, from Peru. 

 Mr. James Smith : 



Pleurosigma quadratum,, -^g immersion objective. 



Section of whalebone with monochromatic light. 

 Mr. Sigsworth : 



Platino-cyanide of yttrium of various forms. 

 Mr. Charles Stewart : 



Acineta living in sponge, Hnlichondria panicea. 



