a good negative it should
be placed in a stout manilla envelope, numbered, named, and any notes in
regard to it which one wishes to remember, all written on the outside.
The negatives should be stored in order in the pigeon-holes, and each
one marked with the numbers of the negatives which it contains, thus: 1
to 25; 26 to 50.

The number and name of every negative should be recorded in a small
blank-book, which is the negative catalogue. Tie a string in this book,
and hang it on a nail or hook at one end of the pigeon-holes, and have
the string long enough so that the book can be used without taking it
from the hook. The marking and storing of negatives in this way save
hours of time spent in searching for some particular negative.

A drawer in the table is very convenient for holding little articles,
and several pegs or hooks are needed on which to hang up those articles
which can be hung up. Keep your dark-room in such good order that it
will be a pleasure to work in it.

Negative envelopes printed on the outside: No. ----, Name ----, Notes
----, can be bought for twenty-five cents a hundred.

SIR KNIGHT EDWARD DAVIDS asks if a yellow light is a safe light
for a dark room. A yellow light is much more agreeable and less
injurious to the eyes than a red light, and if the glass is a deep
orange the light will be quite safe. It is best, when developing,
not to expose the plate to the direct rays of the lantern till
development is well started.

LADY EMMA GRACE wishes to know how blisters in prints may be
avoided. If the prints are put, after toning and before washing,
in a washbowl of salt and water for five minutes they will not
blister.

F. E. W., JUN., asks for a formula for making sensitive paper. "In
Nos. 795 and 803 will be found directions for preparing plain
paper, and in No. 797, 'answers to queries,' will be found a
formula for preparing 'blue prints.'"

SIR KNIGHT OCTAVE DE MAURICE asks for a formula for a glycin
developer. Take glycin, 6 grains; carbonate of potassium, 48
grains; water, 4 ounces. This is said to be an excellent
developer, giving soft negatives full of detail, but requiring
more time than other developing agents.

* * * * *

AN OUNCE OF PREVENTION

is cheaper than any quantity of cure. Don't give children narcotics or
sedatives. They are unnecessary when t