266 Proceedings, (&c., for 1886, 



the finest steam whalers in the world. We do not know the exact 

 terms upon which they can be got, but we expect to learn them 

 soon. 



Mr. Alexander Sutherland also read a paper on " Allotropy," 

 illustrated by experiments. 



The numerous assemblage of ladies and gentlemen then inspected 

 the various exhibits shown by sundry members of the Society, and 

 proved their sustained interest by protracting their examination till 

 a late hour. 



The following were the principal articles exhibited : — Mr. G. W. 

 Selby showed Sir W. Thomson's astatic mirror galvanometer, 

 quadrant electrometer, and dead beat galvanometer ; Obach's 

 tangent galvanometer, and an instrument for producing electric 

 jewels ; electric bridge by Elliott Brothers, and portable irresistible 

 electric miner's lamp ; Crooke's radiant matter tubes, thermo-electric 

 pile ; Deprez and D'Assonval's dead beat galvanometer, and a 

 standard condenser. 



Mr. Lucas showed a table of microscopes, with series of biological 

 slides and histological apparatus, from Trinity College Biological 

 Laboratory. 



Mr. Forbes-Leith exhibited a group of pigmy flying phalangers, 

 family phalangistidse, order marsupialia, genus acrobates, species 

 pygmteus. 



Mr. H. T. TisDALL showed four groups of coloured drawings of 

 Fungi, Agaracini, Polyporei, Clavarici, Tremellini, Myxogastres, 

 Sphoerici, Peziza, &c., and a coloured drawing with section and 

 specimens of a curious polyporus growing on a Mylitta Australis. 



Mr. C. W. Otto exhibited two electric clocks. 



Mr. C. W. M'Lean exhibited one centrifugal pumping engine, 

 one blowing engine for No. 2 Customs Launch, and one small 

 hydraulic portable rivetter from the Tyne Foundry. 



Mr. French exhibited a collection of Australian and Exotic 

 Buprestidae, Longicorns, and Lepidepter^e, including the new Beetles 

 Ratooera Frenchii, Etryoptera Frenchii, Rosenbergia Melanocephala, 

 and Phalacrognathus Muelleri. 



Mr. Josephs exhibited for the Torpedo Corps (1) Watkin's 

 depression position finder, and (2) new circuit-closing apparatus, 

 with relay, for electro contact mines. 



Mr. J. E. Sherrard exhibited two formicaria, two marine 

 aquaria, with specimens of Old wife (Enoplacus armatus), Hermit 

 Crab (Cenobito Diogenes), Porcuj)ine fish (Diodon Histriaa), 

 Flounder (Pleuronectes Yictorise), and one fresh water aquarium, 

 with specimen of Japanese Salamander (Siebolda maxima). 



The following exhibits were contributed by Mr. Smibert and Mr. 

 Quarry, of the General Post Office : — One Deprez D'Assonval 

 reflecting dead beat galvanometer, with transparent celluloid scale ; 

 standard Wheatstone bridge, post-office form ; Deprez galvanometer 



