The comparative anatomy of trunks, : together with an account of their vegetation grounded thereupon; in two parts: the former read before the Royal Society, Feb. 25. 1674/5; the latter, June 17. 1675. The whole explicated by several figures in nineteen copper-plates; presented to the Royal Society in the years 1673. and 1674. By Nehemiah Grew, M.D. and fellow of the Royal Society