JDH is busy working on a new edition of his STUDENT'S FLORA OF THE BRITISH ISLES he compares the delineation of species in the flora to that in Asa Gray's MANUAL OF THE BOTANY OF THE NORTHERN UNITED STATES. JDH consults Gray on whether Gymnosperms should be a subclass of Dicotyledons or a group equal to all other Phaenogams? Joseph Decaisne, Gray & JDH favour the former position, Daniel Oliver & William Thiselton-Dyer the latter. Gnetum, esp. Formation of the embryo, will be key in determining the correct arrangement. JDH has sent the corrected SCIENCE PRIMER: BOTANY to the press, he would find such works easier to write if he also lectured. Life with his new wife Hyacinth Hooker is good & his future looks bright though sad times behind him make him doubt its security. JDH's sister Mrs Elizabeth Evans-Lombe, née Hooker is suffering less from neuralgia & melancholy. George Bentham is well. Oliver is working on the African flora, & Moore[?] is working on grasses. Asks if Charles Sprague Sargent can send American Southern Bamboo.