“y 
Photographer. — 
ASE, WOMBAT 
(And the Geelong Vaturalist.) 
PUBLISHED BY 
The Geelong Field Naturalists’ Club 
AND 
The Gordon College Photographic Club. 
VoL...V,, No, 3. Tuly,.1902. No 19 
Tt is requested that all publications aud pegs vai be 
addressed to the Editor, Mr. C0. F.. Belcher, Gordon: 
Technical College, Geelong, Victoria, Australia. 
Correspondence should be addressed to. the Hon: Bee: of 
the Field Club or =e the ebaoeraeias Club. 
The Editor is not Heapouetdie) for the a athens in any paper. 
NOTES. 
Brilliant Diagrammatic Slides may be quickly prepared if; 
the lanternist will keep a weak solution of Canada balsam in his 
outfit. Make a weak solution of Canada balsam in benzine, then, 
pour it over the glasses and allow to dry. Ordinary ink and pen 
can be used on. this surface for making nithen hae a or 
announcements —Magic Lantern Journal. 
Waterproof Cloth.—Make the two following solutions :— 
A { Rain water 350oz. — B eh? 350 oz. 
{ Common alum 61b. Acetate of lead 2lb. 
For use, mix three parts of A with one of B. This causes a 
precipitate of sulphate of lead; which’ sinks to the bottom of the 
vessel and allows sulphate of alumina to form, and this remains in 
a state of solution. Decant the supernatant lignid, and soak the 
cloth to be waterproofed for 15 or 20 minutes; take it out and 
wring it with your hands and hang it in the shade to dry. ‘The 
cloth thus prepared will be as waterproof as a piece of rubber ; 
sheeting, and will still be quite porous, and posses the ventilation 
which ordinary mackintoshes lack, —Professional ong Haier 
! 
