Proceedings, &c., for 1887. 193 



15. Berthon Telephone Transmitters ; Berliner Telephone 



Transmitters ; Hunning's Improved Telephone Trans- 

 mitters ; Thompson's Telephone Valve Transmitters ; 

 Telephone Receivers by Ader, Aubrey, Telloiix, and 

 DArsonval; Thompson's Telephone Membrane Receiver ; 

 Siemen's Potential Meter ; Low Reading Ammeter and 

 Voltmeter ; New Standard Ohm (Paris Standard) ; 

 Section of Telephone Exchange, Switchboard connected ; 

 Thirty Volt Incandescent Lamps, supplied from a Storage 

 Battery. By Mr. George Smibert. 



16. Barrow and Drum of Copper Wire j Field Insulators 



and Earth Plates ; Vibrating Sounders ; Pair of 

 Heliographs. By Lieut. L. H. Chase. 



17. Submarine Mining Apparatus. Exhibited by Capt. R, E, 



Joseph, on behalf of the Submarine Mining Company 

 Corps of Engineers. 



18. Model of "Ogilvie's Patent Double-wedge Storm Tiller," 



or Automatic Break for steering Ironclads and other 

 hard-steering ships in heavy storms. By Capt. F. C. 

 Rowan. 



19. Centrifugal Machine for Cleaning Mercury ; Centrifugal 



Accumulator. By Mr. Odling, C.E. 



20. Apparatus used in Embryological Work; Apparatus 



used in the process of Section-cutting, viz., hardening 

 of the specimens, embedding of the specimens in 

 paraffin, cutting sections (1) by the freezing, and (2) 

 by the " continuous series " method, preparation of the 

 sections, and mounting of them for microscopical 

 examination ; the Third or Pineal Eye of Lizards : 

 Specimens and Diagrams of " Megascolides Australis," 

 the Giant Earth-worm of Gippsland. By Professor W. 

 Baldwin Spencer, on behalf of the Biological Depart- 

 ment of the University of Melbourne. 



21. Specimens Dredged in the Inner Waters of Port Phillip ; 



Collection of Sponges made by Mr. J. Brainbridge 

 Wilson in Victorian Waters ; Collection of Sponge 

 Skeletons of Victorian Forms and of Victorian Crustacea 

 and Echinodermata made by Mr. A. H. S. Lucas, B.Sc, 

 M.A., F.G.S., and exhibited by the latter on behalf of 

 the Port Phillip Biological Exploration Committee of 

 the Royal Society. 



22. Collection of Australian Coleoptera ; Collection of Hum- 



ming Birds; Collection of Rifle Birds, viz., Ptiloris 

 Alberti, Ptiloris Paradisea, Ptiloris Victoriae; Cras- 

 pedopbora Magnifica. By Mr. C. French, F.L.S. of 

 the Botanical Museum. 



O 



