xliv Journal of Proceedings. perhaps never two centuries in age, and may only have "come in with the Conqueror." Though valued only as covert for game, our English forests probably owed some little planting, besides protection, to the Norman. Gurth, and his acorn-eating swine, was ousted by the foresters of Malvoisin. So also the rest of our flora should be studied. Following up the fine "Flora of Essex," by Gibson (unfortunately a scarce work), we should endeavour to trace the history of the introductions of Nature and of human agency, and by careful study of so-called "critical" species, or "splits," we may be able, even in the tributaries of the Thames, or at least. in the main watersheds of England, to illustrate those laws of geographical distribution which have been shown in the case of the Amazons. At the same time, we should learn the lesson of Continental botanists ; trace every stage of development in any plant we can; study every phase of physiological life by field observation, as well as by laboratory experiment: not omitting the minute discrimination of the much maligned "species-monger." In fact, the Darwinian must note details even more than the mere species-discriminator, since he looks for the intermediate variations that the latter would rather discard. A recognition of the necessity for thoroughness in the many new fields of work suggested by the Theory of Evolution must necessarily lead to an increase of specialism ; but the lecturer thinks that the local Field Clubs have an important function to perform, to some extent counteracting this tendency, in keeping alive that fine old type, now in danger of sharing the fate of our Ilford Mammoths, the "good all- round "naturalists. This is a type represented by such men as John Ray—name dear to Essex—and Gilbert White, naturalist and poet. Such Clubs also bring together students of various branches of science, and so teach us to appreciate work in directions untrod by our own footsteps, and to learn the true proportions of our work to the general scheme of Nature. An eminent geologist once said to the lecturer, "Botany ! what's to be done in botany ? Our plants are all known as well as the butter- flies." It may be enough to reply that one or two plants "new to Britain" are discovered nearly every year, even among Phanerogamia. This is not, however, the sole aim of the botanist. If we turn to the base of the scale of vegetable life, we find the but newly-discovered Myxomycetes (perhaps plants, perhaps animals), the virtually unknown Schizomycetes, and the constantly increasing list of the higher Fungi, among which even the mushroom has not been traced with certainty through its whole life-history. The fresh-water Alga have not been recently monographed; the Characeae are unplaced, and we are much in want of- a satisfactory classification of Thallophytes as a whole. Higher up we have the apparently causeless variation in the Ferns,