In some cases a large ink seal is used to mark the coins, so as not to damage the silver.
His school slate is the "board fence, brick wall, and pavement," his "pen and ink was a lump of chalk" (58).
Two such ink differences could be identified on folio 107.
Intermediate ink colors were proportional color mixtures between pairs of focal colors.
Printers in the past had often made their own inks for use in the slow-going world of the hand press.
These should be sharp and clear, black ink on white paper to about 1.5 times the intended final size.
The primary fluid in their experiment was a water-soluble ink and the secondary fluid was a silicone oil.
In the first task subjects read colour names printed in black ink.
