The Essentials of Illustration

The Essentials of Illustration, by T. G. Hill, is described as a practical guide to the reproduction of drawings & photographs for the use of scientists & others. The contents list, among others, Intaglio Printing, Line engraving, Etching, Mezzotint and Photogravure. The contents also list, among others, Plane Surface Printing, Lithography, Chromolithography and Collotype.

The text says the outline of the ways and means of illustration is primarily intended for ordinary working scientists, not for artists, professional draughtsmen or skilled amateurs. The text says the point of view is mainly botanical, primarily because the present writer is a botanist. The text says that what is required, therefore, is a relief block which will print a number of dots of equal density but of unequal size. The text says that in the case of pencil drawings, the best results will be given when the surface of the paper used by the draughtsman is slightly rough.