OIL AND BROMOIL Sil 
of an inch long, as can be seen on the side shown, so that the 
screws may work up and down. On the lower surfaces of the 
U-iron are fastened some pieces of soft rubber. Real soft 
rubber, such as used for erasing, should be used, and the 
number of pieces will depend on the softness. On the base- 
board is placed first a sheet of linoleum or soft blotting paper, 
then the fluffless sheet, then the bromoil and the transfer 
paper. It is also advisable to cover the transfer paper with a 
sheet of smooth firm drawing paper, and the layers under 
the bromoil should not be too soft or it may wrinkle up. 
The pressure or top board is of the same thickness as the 
bottom one. It is important that this board ride smoothly 
between the ways, and the handles shown on top facilitate 
pressing it to and fro. The knitting needle is used as in the 
smaller arrangement. Increased pressure can be obtained by 
using more papers under the bromoil. It is very important 
that the top piece does not warp and the cross pieces, which 
should be screwed to it, with the heads of the screws well 
sunk in, will prevent this. If necessary the iron ways may be 
greased to make the board move more freely. 
The bromide print for transfer must be very clean and free 
from fog. Soft ink should be used, and, therefore, the relief 
must be kept rather high. The arrangement of the transfer 
block, ready for passage through a roller press, should be as 
follows: two or four thin cards should be used and over 
these a sheet of thin smooth linoleum, then a sheet of thick 
blotting paper. On this should be placed the transfer paper, 
and the position of the bromoil having been previously 
marked by pencil lines at two opposite corners, the inked - 
bromoil should be placed in position and then the same 
arrangement of blotting paper, linoleum and cards placed on 
top, as used under the paper. Great care must be taken that 
there is no sliding action when putting the bromoil in posi- 
