1904 110 p., 34 figs, 16 pls, roy. 4to, contemporary brown half cloth with yellow-brown marbled boards. author and title in gilt on spine. Library stamps on hafl-title and title-page. A few marginal foxing spots on some of the plates, else a very good copy. Bound in is an old photographic portrait of a scientist (botanist? the signature underneath the portrait is indecipherable).