A manual of vegetable materia medica / by George S.V. Wills.
A pharmacy textbook by George S.V. Wills, published in London in 1883 for students of vegetable materia medica learning to identify crude drugs. Numbered colour plates show specimens against blank grounds: barks and roots in rolls and quills, dried leaves, seeds cut open, resin lumps and fibrous rhizomes, usable as isolated botanical objects with hand-lettered catalogue numbers.
