217 



Mr. R. T. Lewis said he had used these lamps for the last 

 twenty years. They were made in New York, and he did his 

 best to induce the maker to bring out one on a smaller scale, 

 which he hoped to be able to adapt not only to the microscope 

 but also as a miner's lamp. He had made designs for these 

 about fifteen years ago, but could not get Hitchcock to take 

 up the idea. 



Mr. J. M. Offord said he had used one of these lamps for 

 about fifteen years, and it was still in good order ; for photo- 

 micrography it was a great success, certainly the best for the 

 purpose he had ever made use of. 



Mr. Goodwin inquired if the Welsbach incandescent gas light 

 was of any use for this purpose. 



The President said this was quite useless, since the image of 

 it in the microscope was not a solid flame, but simply a number 

 of red-hot lines. The incandescent electric lamp was also use- 

 less for the same reason, giving the image of the carbon fila- 

 ment. 



The President gave an interesting account of some of the 

 phenomena attending the production of false images in the 

 microscope, and illustrated his remarks by drawings on the black- 

 board. 



Mr. Ingpen inquired if the President had been able to get the 

 same effects with the Abbe diffraction plate ? He had been 

 able himself to double and triple these images, but had never 

 been able to halve them. 



The President said he had never been able to halve them, 

 although he had of course doubled them. 



Mr. Yezey read an extract from a Brisbane newspaper relating 

 to the bacteriological work carried on by their member, Mr. 

 Pound, at the Stock Institute of S. Australia. 



The usual announcements were then made, and the proceed- 

 ings terminated. 



October 18th, 1895. 



Respiratory organs of Dero ... ... Mr. W. Burton. 



Dissections of Linyphia .. ... ... Mr. H. Freeman. 



Pedalion mirum (mounted) ... ... Mr. C. Rousselet. 



