the sun till
the paper is slightly bronzed. Wash in several changes of water and dry.

When dry take a fine brush and a cake of French blue water-color and
trace the veins of the leaf or flower in the outline. Moths and
butterflies can be photographed in this way. Lace patterns can be
printed on blue paper. Designs for fancy or needle work can be made with
leaves and flowers on blue paper, and are much prettier than those
bought in shops, besides being true to Nature. If one has not the gift
or accomplishment of drawing, this is an excellent way to make patterns,
and they are sure to be correct.

Two formulas have been given in these columns for blue prints. We add
one more:

No. 1.

Citrate of iron and ammonia 1-7/8 oz.
Water 8 "

No. 2.

Red prussiate of potash 1-7/8 oz.
Water 8 "

The iron mixture may be made up, and will keep for a long time. The
potash mixture will not keep over five or six days. Place the paper on a
flat board and dampen it with a sponge. Turn equal parts of each mixture
into a saucer, mix thoroughly, and apply to the paper with a flat brush.
A letter-copying brush is the best kind of brush, as it is broad and
soft. Put on just enough to cover the paper evenly without streaking it.
As soon as the solution has set, hang the paper up to dry. It should dry
quickly, for if it is a long time in drying it will be streaked.

SIR KNIGHT MACM. TOWNER writes that a short time ago he made some
blue-print paper from directions given in the Camera Club, and
when finished the paper was yellow, with blue spots in it, and
asks what is the reason. The trouble is in preparing the solution.
Mix the two solutions thoroughly before using, and apply lightly
and evenly. Sir Kenneth says he prepared the paper by lamp-light,
though the directions did not tell whether to do so or not.
Referring to the copy--No. 797--which contains the directions for
blue prints, we find it reads, "The paper must be sensitized by
gas or lamp light, and dried in a dark room." "To sensitize,"
means to apply the solution to the paper. If Sir Kenneth has any
more trouble in preparing his paper, he is requested to send a
sample to the Camera Club. The plain salted paper which Sir
Kenneth asks where to buy can be obtained of any dealer in
photographic goods, or if he does not ha