Die Schall- und Tonstaerke und das Schalleitungsvermoegen der koerper, physikalische und physiologische Untersuchungen
A German physics and physiology monograph on sound intensity and the sound-conducting capacity of bodies, written by Karl von Vierordt and published in Tübingen by H. Laupp in 1885 for researchers and medical readers. The wood-engraved figures show bench apparatus in outline: upright rods clamped to baseplates, graduated arcs, set screws and dials, with hatched shading and letter labels.
