Take the emulsion strips and put them into a wide-mouth fruit jar; pour enough alcohol on to cover the emulsion, screw on the top, and the emulsion will keep. When you wish it, take up what you want to use, wash it to free it of alcohol, let drain and melt. Add albumen, alcohol, and chrome alum as before, and flow the plates.
If you are in a hurry and do not wish to wait the 3-5 days to gain rapidity, you can take emulsion as soon as all free silver has been formed into silver bromide. Melt the emulsion, heat to 140°-150° F. (60°-66° C), add 480 gr. potassium bromide, and let statu} in the water at 140°-150° F. for 30 minutes. Put aside in temperature of 40°-60° F. (4°-16° C.) to set, and then wash and flow the plates. But if this way is chosen, the emulsion must be washed in a different way than described above, as the soluble ammonium nitrate left in the emulsion will not wash out as in the other-process of washing. When the silver bromide is formed in the gelatine, by placing the silvered gelatine in the brine the emulsion does not take up the soluble ammonium nitrate, so only needs sufficient washing to free the outside from the ammonium nitrate. But in the latter case the ammonium nitrate is all through the emulsion, and must be treated as follows: - Squeeze the set emulsion through a piece of coarse canvas into a large bowl of water, take another large bowl, tie a piece of coarse canvas around the top, pour emulsion and water on to the canvas, so as the water will filter off, take emulsion with a silver spoon off of the canvas into another bowl of water; wash this way 3 times, let drain, melt, add the alcohol and albumen as before stated, and flow the plates.
Put a quantity of silver nitrate in to an evaporating dish on a sand bath, with a small amount of water; add to every pound of silver about 1/2 the white of an egg; fuse the silver until it has melted and run back to an oily liquid; take it off the fire, cool and granulate. This silver is just light for making emulsions, also for making baths by the wet process, and will work in 1/3 the time of any other way of fixing silver.
Take a wooden pail, make a light-tight cover for it; put near the bottom a good-sized wooden faucet; make out of galvanised iron a 1/2-in. tube, with 3 right angles in it, to keep light out, and on top a small funnel of same material; insert this tube near the top of wooden pail; let tube extend into pail about 2 in., and connect a rubber hose to the tube that will reach to the bottom of the pitcher containing the emulsion. The brine can be poured into the funnel, through the tube, on to the emulsion, and when ready to wash, let water run into the funnel, through the pitcher, and off at the faucet below.