THE WOMBAT 



(And the Geelong Naturalist.) 

 Published by 



The Geelong Field Naturalists' Club( 



The Gordon College Photographic Club. 

 Vol. V, No. 3. July, 1902. No. 19. 



It is requested that all publications and exchanges be 

 addressed to the Editor, Mr. G. F. Belcher, Gordon 

 Technical College, Geelong, Victoria, Australia. 



Correspondence should be addressed to the Hon. Sec. of 

 the Field Club or of the Photographic Club. 



The Editor is not responsible for the statements 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 either diagrams or 

 announcements —Magic Lantern Journal. 



Waterproof Cloth. — Make the two following solutions : — 

 A J Rain water 350oz. B ( Rainwater 350 oz. 



\ Common alum 61b. ( Acetate of lead 21b. 



For use, mix three parts of A with one of 8. 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 liquid, 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 and Amateur 

 Photographer. 



