From Dr. Joseph Hooker, Director. Among an immense number of items of useful information, we may note that the "Prickly Comfrey," has been identified by botanists as Symphytum asperrimum; but the one under culture is really not that species. but "probably a hybrid of garden origin between Symphytum asperrimum, and S. officinale, the common garden comfrey. However this may be in Europe, we believe that the one figured in the American Agriculturist some years ago, from a plant furnished by the writer of this, is genuine, - as that had been grown in this country for probably forty years, and doubtless had never any connection with the plant " naturalized in the neighborhood of Bristol," which seems to have supplied the " forage plants " for English agricultural experiments. Sir Joseph Hooker says that in England it has been found useful for Winter fodder, as the foliage starts early, and affords several cuttings a year. It is greedily eaten by animals which yet refuse the ordinary garden comfrey. "A drawing is given of the new 'tropical fodder grass' " Teosinte.