OIL AND BROMOIL 307 
pads. It is possible to use an old print burnisher, but the 
gears interlocking the two rollers should be removed so that 
the lower roller is driven by the pressure only. Or the 
domestic wringer, with rubber or hard wood rollers may be 
used. A very simple means of obtaining transfers was sug- 
gested by Minuth, which consists of rubbing instead of 
rolling, using a hardwood tool, shaped as shown in Fig. 6, 
Fig. 6 
practically a wooden chisel with rounded edge. The rub- 
bing should not be done direct on the bromoil, but prefer- 
ably on a sheet of waxed paper, and this may also be 
used for masks to keep the margins of the paper clean. 
Registration pins are also useful, especially in multiple trans- 
fer. These can be made by passing a flat-headed drawing pin 
through a piece of thin cardboard about 214 x 234 inches, and 
then gluing another piece of card on the back of the first one 
so as to cover the head of the pin. When dry the cards are 
cut as close to the head of the pin as possible. Two of these 
should be made. Two holes should be punched through the 
bromoil at opposite sides, and the back and front of the print, 
