Demonstration skeletal preparation of a standing bird on wooden stand signed E Jerrard and Sons - 19½in high; a coloured plaster deminstration model of liver fluke by E Gerrard and Sons in glazed case; Astacus Fluviatilis Cray fish colour plaster demonstration model on ebonised stand - 8¼in high; and a set of five coloured demonstration models of the development of the frogs egg by T.Gerrard and Co. on ebonised stands - 6½in.high