250 PROCEEDINGS OF SOCIETIES. 



circulation could be clearly observed. After the Chairman's address 

 a few minutes were spent in comparing the scales of the Lepisma 

 found in Australian houses with those of the Lepisma sacchnrina. 

 The Australian Lepisma is commonly known as the silver eel, and is 

 about an inch long. The scales are of precisely the same form and 

 structure as those from England, but are from two to three times 

 their size, and the markings on them are much more distinct. 



The monthly meeting was held on September 17, 1875, 

 Mr. T. D. Smeaton in the chair. 



It was decided to hold a conversazione during October, instead 

 of the usual monthly meeting. Several gentlemen promised to lend 

 their assistance. 



Mr. G. Francis exhibited crystals of aphidine, a fat he had 

 succeeded in extracting from the Aphis. This when melted on a hot 

 slide and allowed to cool formed a beautiful polariscopic object. 

 Mr. Francis also exhibited diatoms from Turkey sponge, and a 

 " Polar clock." 



Mr. Young exhibited specimens of Floscularia. 



The Chairman then gave a short address on the Polyzoa, dwelling 

 chiefly on their characteristics and classification of such as are found 

 along the South Australian coast. Numerous specimens were ex- 

 hibited ; amongst these were several varieties of Catenicella. The 

 Chairman said he had met with at least ten varieties on the Australian 

 coast. 



The first public soiree given by this club was held on the evening 

 of November 6, 1875, in the rooms of the Institute, which were 

 kindly lent for the occasion. His Excellency Sir A. Musgrave, 

 Governor-in-Chief, Lady Musgrave, several members of the ministry, 

 and a large company of ladies and gentlemen, honoured the club with 

 their presence, and manifested great interest in the instruments and 

 objects placed on the tables for their inspection. The following is 

 the list of exhibits: — Eev. J. Jefferis: Smith and Beck's binocular, 

 with Barker's triple selenites ; Field's dissecting and mounting micro- 

 scope ; and Highley's field microscope. Tissue and spicules of sponge 

 (South Australian) ; skin and spicules of holothuria (Northern Terri- 

 tory Trepang). — Dr. Whittell : Powell and Lealand's large micro- 

 scope, with binocular prism for high powers ; Beck's large binocular ; 

 Nachet's portable microscope ; Highley's hospital microscope. Im- 

 mersion objectives : Powell and Lealand's -^^ inch ; Carl Zeiss's 

 ■^^ inch ; Moller's Probe-Platte ; and suitable test-objects. Eye of 

 beetle, showing through each of its lenses a separate image of the 

 seconds' hand of a watch in motion ; poison fang and duct of centi- 

 pede (to illustrate new mode of preparing insect structures) ; anato- 

 mical and pathological sjieciraens — muscular fibre ; hard cancer, 

 showing its earliest stage ; epithelial cancer ; glioma ; Trichophyton 

 tonsurans (from ringworm in scalp) ; scales of lepisma (Australian 

 " silver eel "), shown by Wenham's method of reflex illumination. — 

 Dr. Gardner : Beck's student's microscope ; Moller's Diatomaceen 

 Typen-Platte, containing 409 different diatoms, arranged in order in 



