stent jelly, remove the paper from the plate and
place it to dry in an oven heated at not over 24 or 25 deg. C.

It is desirable that in drying the paper does not curl up. To that end,
apply over it, before it being removed from the plate a wooden frame to
which the gelatine, still sticky, will sufficiently adhere to hold the
tissue when it stretches in drying.

_Yellow Tissue.--_Pulverize to an impalpable powder 25 grams of light
chrome yellow in tablets (water color), and gradually add in stirring 1
liter of rain water. Take 100 c.c.m. of this and into it let soak for an
hour 15 grams of the same gelatine used for the red tissue, add 1 gram of
sugar, then proceed as above.

_Blue Tissue.--_In a liquid consisting of 85 c.c.m. of rain water and from
12 to 15 c.c.m. of blue ink, such as sold by stationers, let soak for an
hour 15 grams of the same gelatine and 1 gram of sugar, and proceed.

_Preparation of Transfer Paper.--_Two kinds of transfer paper are
employed--the enamel and plain transfer paper.

To enamel the paper: Dissolve 100 parts of barium nitrate in 500 parts of
water, and, on the other hand, 200 parts of sodium sulphate in the same
quantity of water. Mix, wash well the precipitate--barium sulphate--by
decantation, and when well drained, mix to the following solution:

Gelatine, Coignet's 300 parts
Glycerine 80 parts
Ultramarine blue 1 part
Crimson lake 0.1 part
Water 2,500 parts

Let soak the gelatine for, say, one hour, dissolve by heat, then add by
small quantities, stirring violently, 4 parts of chrome alum dissolved in
250 parts of hot water. Filter through flannel and coat the paper as
directed to prepare the tissue. The mixture should be employed
immediately after adding the chrome alum.

The plain transfer paper is prepared in the same manner, leaving out the
barium sulphate and the coloring matters.

_Preparation of the Silver Paper.--_Immerse the paper for two minutes in a
solution of--

Sodium chloride (common 2 parts
salt, dry)
Lemon juice 1 part
Water 100 parts (filter)

When dry and wanted for use, sensitize the salted paper by floating for
one minute on--

Silver nitrate 8 parts
Nitric acid 0.1 part
Water 100 parts

On its removal from the silver bath, sponge the paper between sheets of
blotting paper and hang it up to dry.

ENCAUSTIC FOR SINGLE TRANSFER PROOFS.
W