604 



Proceeding^. 



flames were not always luminous, and by a series of experiments he showed 

 that the luminosity of flames arose from solid particles contained within 

 them, which became white-hot. This theory he illustrated by leading the 

 smoke from a turpentine flame into a Bunsen burner, making the flame of 

 the latter luminous : also by scattering powdered chalk in the flame. He 

 gave further illustrations of this theory by the combustion of magnesium 

 and phosphorus, proving that the luminosity was due to the presence of 

 particles. Professor Brown then dealt with the arguments against this 

 theory, as, for instance, the flame from arsenic. This he explained was an 

 oxide, but he could not illustrate it, as without special provision there would 

 be danger from the fumes. He, however, gave an illustration from carbon 

 sulphide, which when applied to the oxygen jar created some sensation. 

 There was a brilliant light for a moment and then a loud explosion, which 

 created some consternation amongst the audience. He, however, showed 

 that even here there was a sohd body in the flame. Professor Brown then 

 in a very interesting manner proceeded to show by a series of experiments 

 that the luminosity of the flame of coal gas was due to the carbon particles 

 contained in it. 



Ninth Meeting : 20f^ September, 1886. 



New Member. — Dr. Davy. 



Papers. — 1. " New Species of Coleoptera,'" by Capt. T. Brouu. 

 The following species were described : — 



Species. Locality. 



Group, PoGONiD^. 



Oopterus collaris . . . . . . . . Mount Arthur 



,, pallidipes . . . . . . . . ,, 



Group, Anchomenid.^. 

 Tarastethus alpinalis . . . . . . . . „ 



Group, Bembidiid^. 

 Bembidium anilloides 



Group, Staphylinid^i;. 

 Quedius fuscatus 



Group, PsELAPHIDiE. 



Pselaijhus citimus 

 Tyrus armatus 

 Exeirarthra enigma . . 



Group, CRYPTOPHAGID/Ti. 



Telmatophilus olivascens 



Group, Melolonthid^. 

 Stethaspis prasinus . . 

 Costleya discoidea 



Group, Dascyllii>;e. 

 Mesocyphon pallidus . . 

 ,, laliceps . . 



Cyphon pauper 



,, discedens 



,, flavesceus 



,, nigritulus 



,, fuscifrons 



,, fulvicornis 



,, ornatus 

 Cyphanus dubius 

 Cyphanodes vestitus .. 

 Atopida Buturale 



Moko Hinou Island 

 Mount Arthur 

 Howick 



Mount Arthur 



^Yellington 

 Mount Arthur 



Waitakerei 



W aitakerei Kange 



Mount Egmont 



