enough to have every tinge of red entirely removed, and yet not long
enough to turn the prints to a dull gray.

When the prints have been sufficiently toned, they should be thoroughly
washed and then put into the fixing bath. This bath is made of one
gallon of water, one pound of sodic hyposulphite, one tablespoonful
sodic bicarbonate, and one tablespoonful common salt.

These ingredients should be thoroughly dissolved, and then a portion put
in a tray. This tray must be kept for the fixing bath and not be used
for any other purpose. The prints are put in the tray in the same manner
as in the toning bath, and moved continually until they are fixed.

This process should take fifteen minutes, or, if the bath is rather
cool, the time may be extended to twenty minutes.

After the prints have been removed from the fixing bath they are put in
a strong solution of salt and water, to prevent their blistering. After
they have been in this solution for about five minutes they are then
ready for their final washing. The prints should be left in running
water for some hours, and there is very little danger of washing them
too long or too thoroughly.

After every trace of the fixing bath has been removed, the prints may be
taken from the water and dried between sheets of chemically-pure
blotting paper. They will not curl up when dried in this way, as they do
when simply exposed to the air.

The prints are now ready to mount. This is by no means the least
difficult nor the least important of the many processes necessary to