Fig, 4.19—-Autocadiograph of goatfish, M. eurifiamma. showing radioactivity in the gills, Blue Brand, ‘ ve Gai. Dec, 3, 1952, to Jan. 5, 1953. Fig. 4,20-—--Photographof fish used in autoradiograph of Fig. 4.19. Section of vertebrae removedfor counting. Counts in tissues were: muscle, 1,660; skin, 17,500; bone, 16,000; Liver, 29,900; and gut, 75,600.