78 THE WOMBAT. 



waxed paper generally *ased for larger sized plates, which is 

 .always to be found in every dark room. 



The plates will be found to be very slow, far more so in 

 fact than the generality of lantern plates ; they are therefore 

 not so suitable for reductions as for contact work. For cold 

 ;black tones by contact, expose from 8 to 10 seconds with an 

 average negative, at a distance of i foot from an ordinary 

 1 6 c. power gas jet, and develop with the following metol 

 •developer : — 



No. i Metol, 40 gr. No. 2 Pot. Carb., 120 gr. 



Soda Sulph, 7 dr. Pot. Bromide, 48 gr. 



Water, 8 oz. Water, 8 oz. 



Use equal parts of each. The image will come up very 

 quickly, but it will be necessary to continue development 

 till the image is well through the back, and the front appears 

 over developed and fogg3 r . 



For warm black tones give about the same exposure, but 

 instead of metol use equal parts of the following Hydrokinone 

 developer : — 



A Hydrokinone, 64 gr. B Soda Hydrate, 64 gr. 

 Soda Sulph., 6 dr. Water, 8 oz. 



Pot. Brom., 12 gr. 

 Water, 8 oz. 



For tones ranging from violet to deep brown, red, and 

 'Crimson, increase the exposure in the first case to three or 

 four minutes, and add to each ounce of above mixed 

 developer three grains of ammonium bromide and three grains 

 •of ammonium carbonate, or for red or crimson tones expose 

 six to ten or more minutes, and add to developer six grains 

 each of the ammonium bromide and ammonium carbonate. 

 By varying the exposure between these periods and also the 

 amounts of the two chemicals added proportionately, so the 

 resulting colours will differ. In the case of prolonged ex- 

 posures the image will be a long time appearing, probably 5 

 minutes or more, and density will be gained very gradually. 



It is better to err on the side of over development than 

 otherwise, as if the slides are not sufficiently dense, and are 

 intensified, the effect originally aimed at is lost, although 

 some very nice effects may be obtained, my experience being 



for FOOTBALLS and all ■*. 



^^^ Spo rting Req uisites, 



GO TO "^ 



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