42/51 389) found in sixteen seeds of Petrocallis Pyrenaica the form of the embryo so uncertain that he could not tell whether it ought to be placed in the sub-orders 'Pleurorhizee' or 'Notor-hizee'; so again (p. 400) in Cochlearia saxatilis M.Gay examined twenty-nine embryos, and of these sixteen were vigorously 'pleurorhizees,' nine had characters intermediate between pleuro-and notor-hizees, and four were pure notor-hizees." "M. |