Letters on natural magic, addressed to Sir Walter Scott, bart
Letters on Natural Magic is an 1834 London book by the Scottish scientist David Brewster, written as a popular account of scientific recreations and experiments addressed to Sir Walter Scott. Its engravings are simple line diagrams of apparatus: a square frame with labelled corners, a conical pivoted instrument on a stand, a set of wedge and funnel shapes, and a small cylindrical vessel above a curved trough, drawn with clean outlines and letter labels a designer could borrow for technical schematic motifs.
