280 PROCEEDINGS OF THE SECTIONS. 



Dr. F. H. Quaife — " On Sanitary and Domestic Sewerage, as 

 carried out by the Sydney Water and Sewerage Board." 

 (Illustrated by models and diagrams.) 



Dr. MacCormick — " On a case of Pylorectomy," with living 

 exhibit. 



WALTER HULL, M.D ) v « . • 



J. F. MACALLISTER, M.B. j Hon. Secretaries. 



MICROSCOPICAL SECTION. 



A preliminary meeting of this Section was held on 2nd May, 

 1890, Mr. S. MacDonnell in the Chair. 



The following officers were elected for the year : — Mr. S. 

 MacDonnell, Chairman ; Mr. H. O. Walker, Secretary ; Dr. 

 H. G. A. Wright, Mr. F. B. Kyngdon, Mr. G. D. Hirst, and 

 Mr. P. R. Pedley, Committee. 



Monthly Meeting held 12th MAY, 1800. 

 Dr. Wright in the Chair. 



Mr. Hirst exhibited a very fine slide of Arachnoidiscus Ehr eit- 

 her gii in situ on zostera, which had been sent him from Japan. 



Monthly Meeting held 9th JUNE, 1890. 



Dr. Wright in the Chair. 



Mr. Hirst read a short paper on the structure of the diatom 

 Climacosphenia Australia, and stated that the striae on the margins 

 of the valve were exceedingly close, there being slightly over 

 110,000 to the inch. Mr. Hirst recommended the diatom as 

 being well worth the attention of those members who possessed 

 high power wide angled lenses. The diatoms exhibited were 

 taken from a gathering obtained from the stomach of a garfish. 



Mr. Wiesener exhibited a highly finished microscope by Charles 

 Reichert of Vienna, fitted with two stages, a plain and a mechanical 

 one, the change from one to the other being quickly and easily 

 effected. A set of compensating eyepieces and a number of 

 -excellent objectives were also included. 





