_Is it dangerous to use the Ammonio-Nitrate of Silver?_--Some time ago I
made a few ounces of a solution of ammonio-nitrate of silver for printing
positives; this I have kept in a yellow coloured glass bottle with a ground
stopper.
I have, however, been much alarmed, and refrained from using it or taking
out the stopper, lest danger should arise, in consequence of reading in Mr.
Delamotte's _Practice of Photography_, p. 95. (vide "Ammonia Solution"):
"If any of the ammonio-nitrate dries round the stopper of the bottle in
which it is kept, the least friction will cause it to explode
violently; it is therefore better to keep none prepared."
As in pouring this solution out and back into the bottle, of course the
solution will dry around the stopper, and, if this account is correct, may
momentarily lead to danger and accident, I will feel obliged by being
informed by some of your learned correspondents whether any such danger
exists.