PLATE I
Fig. 1: A, base to which frame is attached; B, frame; C, insect. Fig. 2: A, sheet of glass or perspex; B, small glass tank; C, fish. Fig. 3: A, main light; B, secondary light; C, fish; D, ‘cage’; E, glass tank; F, floor of tank; G, camera. Fig. 4: A, camera; B, cable release; C, extension tube; D, electronic flash; E, pistol grip platform; F, pistol grip; G, cable release plunger; H, lens; fl-s, flash-to-subject distance; l-f, lens-to-film distance; l-s, lens-to-subject distance. Fig. 5: A, camera; B, focussing bellows; C, lens; D, secondary lamp; E, mirror; F, main lamp; G, column; H, flower; I, base board. Fig. 6: A, base for ensuring measuring device is at right angles to flash tube (applicable only to types presenting a virtual flat surface to the subject); B, tube; C, threaded collar for securing rod in position; D, rod.