Die mutationstheorie. Versuche und beobachtungen über die entstehung von arten im pflanzenreich
Die Mutationstheorie is a scientific treatise on plant evolution by the Dutch botanist Hugo de Vries, published in Leipzig in 1901 by Veit & Comp. for a readership of botanists and biologists. The pictures are plain black-and-white botanical drawings of leaves, flowers and stems, with lettered labels (a, b, A, B, c) keyed to comparison views, which a designer might take as a model for clean scientific diagrams.
