Eastman's bkomide paper. 
149 
out slowly and the development is completed within, say, 
two and-a-half minutes, it will have been about correct ; 
if it comes out too slowly, the time will have to be in- 
creased ; if J on the other hand, the pictui'e by appearing too 
rapidly, gives indication of over exposure, the time must be 
decreased. Too rapid development can be at once checked 
by the addition of a dram of water. It will then proceed 
satisfactorily to the end. If a batch of, say, six prints have 
been printed otf and are to be developed, half the developer 
used for the first print may, provided it has not been diluted, 
be poured away, and half fresh added for the next. In this 
way two and-a-half ounces of developer will be quite suffi- 
cient to develop six prints, this quantity having been mixed 
before development is commenced. 
The prints will now be ready for fixing in the hypo. 
It is as well not to touch either the hypo bottle or dish 
untU they are wanted, for the slightest trace of this chemical 
will stain the whole batch of prints. A convenient way of 
making up this bath is to fill up a bottle of the crystals with 
boiling water. It cools so quickly that there is no fear of 
breaking the bottle. After well shaking, nearly the whole 
will be dissolved. The liquid is then passed through a filter 
into a clean bottle, which is labelled " Hypo Sat. Sol." 
One ounce of this added to 4 ounces of common water will 
be the fixing bath (one to five), of which one ounce will 
safely fix one 8^ x 6^ print, but as it is best to cover them 
well, 12 ounces may be used at one fixing for six prints, and 
be used twice over for two batches, each of six prints. After 
this it will have become discolored, and exhausted, and may 
be thrown away. After the prints have been in the hypo 10 
minutes, the yellow jacket of the lamp may be lifted off and 
they may be examined. By this time all the yellow bromide 
of silver should have been dissolved out, and the high lights 
appear pure white. After this, another 10 minutes in the 
hypo will be sufficient. They may then be taken out one by 
20 
