YELLOW 
IMPRESSION 
PLATE I 
PRIMARY COLOURS 
Y 
B 
C 
flat tint of yellow 
flat tint of blue 
flat, tent of carmine 
tine tint of yellow 
ftiarxaairvbaX, rating) 
b 
tine tint of bine 
(vertical rudnyj 
c 
tine tint of carmine 
(diagonal riding) 
BINARY COLOURS 
Y + B 
flat tint of yellow 
overlaid- by /tat, tint 
of blue 
y * b 
fine tint of' yellow 
overlaid by line tint 
of blue 
Y + b 
flat tint ofyedo-w. 
overlaid by line tint 
of blue 
y + B 
fine tint of yellow 
overlaid by flat, tint 
of blue 
Y + C 
flat tint of yellow 
overlaid by flat, tint 
of carmine 
y / a 
fine tint of yeJLcrw 
overlaid, by tine tint 
of carmine 
y «■ c 
Line tint of yellow 
overlaid by flat tint 
of carmine 
Y + c 
flat tint of yellow 
overlaid byline tint 
of carmine. 
B + C 
flat tint of bine 
overlaid- by flat tint 
o f carmine 
b + C 
fine tint of blue 
overlaid by line tint, 
of carmine 
B * C 
flat tint of bine 
overlaid by line tint 
of carmine 
b + C 
Line tint of bine 
over-laid by flat tint 
of carmine 
TERNARY COLOURS 
Y*B+C 
flat tint of yellow 
overlaid by flat tint 
of blue and by flat tint, 
of carmine 
y* b+c 
fine tint of yellow 
overlaid, by tine tint 
of bine and by line tint 
of carmine 
V ♦ B + c 
Flat tint of yellow 
overlaid by flat tint 
of bh/eand by tine tint, 
ofoarrrane 
V* b+e 
flat tint of yellow 
overlaid by line tint 
of bine <md by line tint 
of carmine 
V* b + C 
flat. tint of yelloyv 
cwor'laid by line tint 
of Trine and by flat tint 
of carmine 
y + B+C 
fine tint of yellow 
overlaid by flat tint 
of bine and by flat tint 
of carmine 
y* B+c 
Line tint of yellow 
overlaid, by flat tint 
of bine and by line tint 
of carmine 
Geological Survey. Canada 
y+ b+C 
Line tint of yellow 
overlaid by one tint 
of blue and by flat tint 
fjf' C cjJ YrL£7Tj& 
Chart illustrating a process o£ lithographic three-colour printing 
for file reproduction of geological maps. 
To accompany Bulletin by C O. Seneca! 
