[large fingerprint figure] The Finger Prints of M and R Figure 2 These finger prints afford in themselves an excellent criterion of monzygosity. One depends not so much upon a correspondence in the finger-print formulae in forming a judgment concerning monozygosity as upon close correspondences in details of pattern between homologous fingers of two individuals. Note especially the striking resemblance between digits I and III of the two left hands and digits I, II and IV of the two right hands. Also note that in each individual the only loops are on digits I and IV of the two left hands. [end]