Published by Cambridge University Press, Cambridge for The Royal Society, 1976, 1st edition. Maroon cloth boards, gilt lettering on blue patch to spine, gilt crest to front board, under red dustwrapper with white and black lettering. 11.25ins x 8.25ins, xxxviii, [ii], 499pp plus 5pp plates. Dw has two short nicks to head of spine else VG / VG.