58 THE ESSEX NATURALIST. By Mrs. Hatley. Original water-colour drawings of houses at Hatfield Broad Oak and elsewhere in Essex; also selenite crystals from the London Clay viewed by polarised light. By Mr. Paulson. Various lichens, to illustrate their varied forms and colours. By Miss Hibbert-Ware. A fine series of nestling birds; also living Azolla filiculoides. By Mr. Main. Living Methoca ichneumonides, various ground beetles and cockroaches. By Mr. Dennis. Transparencies of Essex wild-flowers. By Mr. Mothersole. Prehistoric implements from the Chelms- ford district; a nest of Redbreast made in an old leather cycle-wallet, (this exhibit was afterwards presented to the Museum.), nests of Megachile and Osmia. By Dr. Turner. Elodea canadensis, both summer and winter forms. By Mr. Bushby. Living scorpions, bird-eating spider, and caterpillars of the four-tailed butterfly. By Mr. Taverner. Coloured stereoscopic photographs of natural history objects. By the Club's Museum. Specimen cabinets of fossils from the Red Crag and the London Clay, of mosses, of lichens, of birds'-eggs, pellets and skeletal parts, and of butterflies and moths. Various displays under microscopes were also made, includ- ing the following:— By Dr. Carter. Micrasterias denticulata. By Mr. Jackson. Specimens of the Battledore Wing Fly (Mymar pulchellus), ♂ and, ♀ from Highbeach. By Mr. Bestow. Scales of the Cabbage Butterfly. By Mr. Todd. Lophopus crystallinus. By Mr. Soar. Various Moths; also Chrysis ignita viewed by dark-ground illumination. By Mr. Wilson. Young Shore Crabs and Plaice at various stages of development; also Zoea of Hermit Crab. A complete set of the publications of the Club during the fifty years of its existence was on view on a centre table in the Hall. The conversazione was continued until shortly after 8 o'clock, when the playing of the National Anthem by the trio-orchestra