a coloured illustration was the " Book of St. Albans,"
printed in 1486, which contained some coloured heraldry. This was only five years later than Caxton's first book.
From the fifteenth century till the eighteenth there were no coloured illustrations printed in books, but in 1754 John Baptist Jackson reintroduced the process, and since his time methods have increased, finally reaching the doubtful blessing of three.
colour printing. Mr. Hardie gives a very curious account of a man named Le Blon, who at the end of the eighteenth century
developed a similar process. His principle was to apply his three colours by hand to his plates, and, of course, photography had no place in his methods. Those anxious to know the means by which the various coloured prints that have been so numerous during the last hundred years were produced will find information in the present volume. The writer gives a short but clear account of the three-colour process, and of its arbitrary and inexact methods of reproducing colour.
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