308 PROCEEDINGS. 



Nineteen volumes, one hundred and forty-two parts, fifteen 

 pamphlets, one volume of photographs, and one atlas of maps, 

 received as donations since the last meeting, were laid upon the 

 table and acknowledged. 



The following papers were read : — 



1. " On a wave-propelled vessel," by Lawrence Hargrave. 



2. " Notes on a spontaneous disease among Australian rabbits," 



by M. Adrien Loir. 



3. "Notes on some celestial photographs recently taken at the 



Sydney Observatory," by H. C. Russell, b.a.,c.m.g.,f.r.s. 



4. " Some Folk-songs and Myths from Samoa," translated oy 



the Rev. G. Pratt, with Introductions and Notes by John 

 Eraser, ll.d. 



Remarks were made by Messrs. C. Moore, W. M. Hamlet, 

 Rev. W.'Wyatt Gill, and the Chairman. 



Exhibit. 

 " Rapid filtration without the aid of pumps," by William M. 

 Hamlet, p.i.C, f.c.s., Government Analyst. — In the ordinary 

 method of filtration a disc of filter paper is folded in quadrants, 

 and the cone of paper opened out into a funnel for its support, 

 In this way half the area of the filter consists of one thickness of 

 paper while the other half is composed of three thicknesses of 

 paper — a decided drawback and disadvantage in quick filtration. 

 Mr. Droop Richmond, suggested a new mode of folding the filter. 

 The disc is first folded in two as in the ordinary way, then opened 

 out and folded at right angles into two similarly equal halves. 

 The disc is again opened out and turned over and a third fold 

 made so as to equally divide any two opposite quadrants. Thus 

 there are two folds on one face of the paper and the third fold on 

 the other face. By drawing the folds up into a cone an equal 

 distribution of the folds is obtained and the objectionable triple 

 thickness of the old filter done away with. In order to keep the 

 fold upright after moistening with water, Fessenden (Chem. News 

 Yol. lx. p. 102) proposed a Y-shaped central support to be used 



