Take pure rain or distilled water, one quart, filter through
paper into a ground stopper bottle, and add, for warm weather,
one and a half ounce chloride of iodine; or for cold,
one ounce; then add one ounce bromine, and shake well.
Now with care not to allow the vapor to escape, add drop by drop,
thirty drops of aqua ammonia, shaking well at each drop. Care must
be taken not to add more at a time, as it evokes too much heat.
This mixed, in equal proportions with John Roach's quick,
forms an excellent chemical combination. For this purpose,
take one and a half ounce of each, to which add ten ounces water,
for warm weather, or from six to seven for cold. Pour the whole
into a large box, and it will work from two to four months.
I am now using (l849) one charged as above which has been
in constant use for three months, and works uniformly well.
The above is right for half or full size boxes, but half of it
would be sufficient for a quarter size box.

Coat to the first shade of rose over iodine, change to a deep
rosy red over quick, and black about one tenth the first.

I would not now recommend the addition of "John Roach s quick,"
as I believe equally good results can be produced without it.
This liquid is now used by many, and is very good for taking views.

Lime Water Quick.--This mixture is more used at present than
all the other liquids ever introduced. It produced the most
uniform results, giving the fine soft tone so characteristic
in pictures produces from accelerators containing chlorine.
To one quart of lime water (this can be had of any druggist)
add one and a half ounce of pulverized alum.