When burnishing bromide prints, thoroughly clean a sheet of patent plate glass and dust over it finely powdered French chalk, rubbing it well in all directions; then polish off all the chalk. Some workers prefer to pass the prints through the alum bath after fixing with slight washing before final washing. They are perhaps less likely to stick. If the prints are backed with waterproof paper, this difficulty is removed for a time. Mount the prints dry; as they lie flat owing to their thickness, run a 1/2-in. strip of mountant around the edges only. For this an alcoholic solution of gelatine or rubber solution may be used. It is not advisable to enamel bromide prints, as their character is thereby destroyed.