Minutes of Proceedings. XxV 



Mr. 0. K. Woods (a visitor) described the iufiuence of tlie size of 

 tlie particles of bromide of silver on tlie rapidity of plates. 



A vote of thanks to Dr. Gill and Messrs. Stewart and Woods closed 

 the proceedings. 



Ordinary Monthly Meeting. 



Wednesday, March 31, 1886. 



Puor. MacOwan, B.A., F.L.S., President, in the Chair. 



The Rev. Gr. H. ~R. F'isk exhibited eleven Greckos eggs which had 

 been found under the bark of a fir tree at Gamps Bay, and drew 

 attention to the irregular times which elapsed before the eggs were 

 hatched. He also exhibited some specimens of the Geckos (a kind of 

 nocturnal lizard) which laid the eggs. Mr. Fisk further exhibited 

 some eggs which had been found under ant-heaps. 



Mr. Peringuey made some interesting remarks on the exhibits. 



Mr. Peringuey exhibited a Gastine injector, one of the instruments 

 used in extirpating the phylloxera ; and explained the manner in 

 which it was used. The ground is first dug to allow a ready percola- 

 tion of bisulphide of carbon which is injected by means of the Gastine 

 injector. Owing to the extreme heat which prevails in some of the 

 vineyards situated in low tracts of country', there is considerable 

 evaporation of the bisulphide of carbon, which is not unattended with 

 danger to persons employed in the work. 



Prof. MacOwan exhibited, in a glass tube, a specimen of vineroot 

 which had been badly attacked by phylloxera. 



Mr. Peringuey presented the second part of his paper on " S. A. 

 Coleoptera," which, owing to the character of the subject, was taken 

 as read. 



Dr. Marloth then proceeded to read his paper on " The Origin of 

 the Diamond Mines of S. Africa." 



A discussion followed, in which Messrs. Merriman, Stewart, and Drs. 

 Beck and Shaw took part. 



On the motion of the President, it was resolved to keep the discus- 

 sion open till the next meeting. 



A vote of thanks was passed to Dr. Marloth for his paper. 



Ordinary Monthly Meeting. 



Wednesday, May 5, 1886. 



PiioF. MacOwan, B.A., F.L.S., President, in the Chair. 



Mr. C. Ray AVoods was elected an Ordinary Member of the Society. 

 The following presents were announced, and the thanks of the 

 Society voted to the donors : — 



Transactions of the Linnean Society, vol. 2, pt. 8, vol. 3, 



pts. 3 and 4. 

 Faune Coleopterologique Aralo-Caspienne, Part I. 

 Boletin de la Academia Nacional de Ciencias en Cordoba, 

 vol. 8, part I. 



The President exhibited microscopic slide of winged form of Phyl- 

 loxera, developed in warm and moist atmosphere in an experimental 

 house. This is the form of creature that lays the " winter Q^^.^^ 



