JDH writes that he looks forward to Asa Gray's new edition of the MANUAL [OF THE BOTANY OF THE NORTHERN UNITED STATES]. JDH has found revisions to the New Zealand Manual difficult, especially regarding Cryptogams; amongst which only the algae have been well classified thanks to Harvey. Discusses the delay in publishing the manuscript of GENERA OF CAPE PLANTS. Praises Lefever. Complains that Muller is giving his name to pre-existing species & creating synonyms, apparently on the advice of Alphonse De Candolle [ADC] whom JDH finds arrogant & narrow minded. ADC has been unwilling to accept any of JDH's proposed changes to PRODROMUS SYSTEMATIS NATURALIS REGNI VEGETABILIS. Munro's paper on Bambuseae & Triana's paper on Melastoma will be read at the Linnean Society. Morse & Sons of Boston called at Kew. JDH reads THE NATION. Is glad that the Tories will take up 'the Alabama Case', though JDH is 'a Whig myself' (if anything), he thinks the aristocracy had wiser ideas during the 'American War'. He comments on the relative morals, honour & violent tendencies of the upper, middle & lower classes in Britain, with reference to natural selection. Gives his opinion of Malthus' book on population [AN ESSAY ON THE PRINCIPLE OF POPULATION].