PROCEEDINGS OF THE SOCIETY. 387 



to Blackheath Common, Highgate, or Hampstead, or to many other places 

 equally near, which had long since fallen a prey to the speculative 

 builder. At the present day they must go farther afield to find the ponds, 

 but wherever they were found, they could still obtain an abundance of 

 beautiful objects. He would now ask those present to examine the 

 exhibits on the tables before them, and he felt sure they would find there 

 was enough of beauty to justify his eulogium. 



The Secretary read a letter from the Society of Marine Engineers, 

 inviting the Fellows of the Society to a lecture by Mr. Houghton on 

 " The Microscopic Structure of Iron and Steel." 



New Fellow : — Mr. Charles B. Chichester was elected an Ordinary 

 Fellow of the Society. 



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



Messrs. B. and J. Beck : — Standing's Imbedding Microtome. Gray- 

 son's Eulings : 1, Test-plate of 10 bands, the rulings ranging from 

 1000 to 10,000 lines per inch ; 2, Micrometer, divided into Troths and 

 ^^.yths of an inch, and into ^ths, T \jths, and j-J^ths of a millimetre ; 

 3, Test-plate of 12 bauds, the rulings ranging from 5000 to 60,000 

 lines per inch. 



Mr. T. D. Ersser : — A Eeversible Live-box, and a similar box with 

 Web of Spider spun in it. 



Messrs. Powell and Lealand : — A new Semi-Apochromatic Homo- 

 geneous-Immersion T V in. Objective of 1*4 N.A. 



Mr. J. C. Webb: — An old Microscope by Andrew Pritchard. 



Mr. E. Bartlett : — Ghara vulgaris, showing cyclosis. 



Mr. A. Dennis : — Limnias annulatus. 



Mr. A. J. French : — Larva of May-Fly. 



Mr. G. T. Harris: — Cyclosis in Closterium. 



Mr. A. Hilton: — Stentors. 



Mr. E. Hinton : — Batrachospermum vagum. 



Mr. J. Hood: — Stephanoceros Eichhorni ; Melicerta ring ens \ Limnias 

 Ceratophylli ; Plumatella repens, emerging from Statoblast. 



Mr. K. J. Marks : — Philodina megalotrocha. 



Mr. M. Poser : — Lophopus crystallinus. 



Mr. G. H. J. Eogers : — Cristatella mucedo, young colony. 



Mr. C. F. Eonsselet : — Brachionus, Synchseta, Anuraea, &c. 



Mr. D. J. Scourfield : — Acroperus harpee. 



Mr. C. J. H. Sidwell :— Olfactory Setaa on Antennule of Acroperus 

 harpae x 400. 



Mr. C. D. Soar : — Atax ypsilophorus. 



Mr. H. Taverner : — Atax ypsilophorus, ventral view. 



Mr. W. E. Traviss : — Phantom Larva. 



Mr. A. Yerinder : — Stephanoceros Eichhorni. 



Mr. W. Wesche : — Brachionus quadratus. 



