262 PROCEEDINGS OF THE SECTIONS. 
Dr. Ratpu, President of the Microscopical Society of Victoria, 
called attention to the supposed presence of a Bactllus in the 
living plant cells of a Vallisneria growing in a pond in the 
Botanic Gardens. 
Messrs. Hirst, Pepiey, and Kynepon exhibited Plumatella 
repens, Vorticelle, and several other living fresh-water organisms. 
. Hewert showed his arrangement of the Micro-polariscope, 
whereby the rings and crosses produced by convergent light upon 
eale spar (a uniaxial crystal), nitre and quartz (bin-axial 
crystals) were beautifully displayed. 
One of Prof. Huxley’s Dissecting Microscopes, made by Parkes 
of Birmingham, and containing many novel features, was eX- 
hibited. 
9 JULY, 1883. 
Mr. G. D. Hirst in the Chair. 
A list of the Foraminifera of Victoria was presented by the 
author, Mr. Warts, of Collingwood, Victoria. 
Mr. Hewerr exhibited his adaptation of the Micro-polariscope 
to display “ circular polarisation.” 
Dr. Morris showed Messrs. Swift’s arrangement for the same 
purpose ; also Swift’s new combination of the Petrological and 
University stands,—an admirably designed instrument for public 
analysts, geologists, and students. 
Dr. Morris exhibited slides of butter, and oleo-margarine, and 
explained the manufacture of artificial butter and its distin- 
guishing test under the micro-polariscope. 
Mr. Hirst shewed some beautiful drawings he had made from 
the microscope, of several forms of fresh-water organisms, and 
living specimens of the same class were displayed beneath his own 
and other microscopes. 
18 AUGUST, 18838. 
Mr. G. D. Hirst in the Chair. 
Mr. WuirTeteccE read a paper entitled “ Notes on Pond Life,” 
descriptive of the best methods of searching for, collecting and 
preserving alive for observation the various forms © 7 
animal life to be met with in fresh water, and he gave 4 list of 
his findings in the Waterloo marshes. 
_Mr. Water exhibited two mounted slides of a winged and 
. Wingless scale insect found on gum-leaves. 
. Wirrerecce showed two tubes of Volvow preserved for 
fourteen months with osmic acid. . 
Mr. Hirst called attention to the increase of angular aperture 
taine screwing the collar of Zeiss’ $ water immersion 
objective to its ae and using | of glycerine to 2 of water - 
ion fluid, 
the immersio 
