212 THE ESSEX NATURALIST. to the school cabinets of scientific and educational objects sent out by that firm. He also catalogued part of the Brassey collection, and described the corals brought home from the voyage of the Sunbeam. Advancing age at length brought him into very reduced circumstances, but fortunately his position became known to the late Mr. F. W. Harmer, who was engaged in the preparation of his Monograph on the Pliocene Mollusca; with the happy result that the last fifteen years of the old collec- tor's life were passed in happy surroundings and employed in congenial work, wherein his great knowledge of the Pliocene fauna was put to most valuable use. The association between the two ardent workers on the Crag deposits was only terminated by Mr. Harmer's death in 1923. After Mr. Harmer's decease Alfred Bell retired to Ipswich, where, amongst old friends, and in close touch with the Museum, where he did a considerable amount of work, and to which he contributed many important specimens, the old man spent his closing days in peace and comfort. In the preface to the last part of the "Pliocene Mollusca," issued after Mr. Harmer's death, Alfred Bell wrote:—"The late author of this Monograph realized his wish to complete his account of the Pliocene gasteropoda before his death. . . We had proposed to write a joint memoir on the bivalves, but it was not to be. The large series of Astartes which Mr. Harmer intended to work out, and such other new forms as we possessed (excluding oysters) are in the British Museum (Natural History) to which the greater part of the collection has been given. The figured specimens corresponding with the Monograph as pub- lished are, however, in the Sedgwick Museum, at Cambridge. The oysters, of which I have photographs of sixty well-marked forms (Pliocene, Pleistocene and Recent) are now being worked out by myself." This work Alfred Bell continued as opportunity offered down to the time of his death. He had already, in 1920, con- tributed a valuable paper on "British Oysters: Past and Pre- sent" to The Essex Naturalist (vol. xix., pp. 183-221), and he continued to collect, through correspondents and friends, evidence relating to this little studied and difficult group of mollusca.