Secrets of wise men, chemists and great physicians
A compendium of formulas, household recipes, medical prescriptions and parlour tricks compiled by Wm. K. David and self-published in Chicago in 1889 for general readers and small tradesmen. The wood-engraved figures show apparatus in plain outline — hatched wooden cases on casters, decanting stands with marked angles, dotted cutaways of hidden mechanisms — useful for diagram linework, cross-hatched shading and technical labelling.
