Publication details:
London: presentation copy to John Tyndall of the Royal Institution of offprint from the 'Proceedings of the Royal Society', No. 94, 1867.
8 leaves, 8vo, paginated [5-6] 7-19 [1]. Stitched: in contemporary brown plain wraps. In good condition, though folded in half lengthwise and with wraps rather grubby. Inscription reads 'Dr Tyndall FRS &c &c | from J P G'.