3. INTEGUMENTUM COMMUNE
GEORGE A. CLARK, JR.
With contributions from subcommittee members: E. H. Burtt, Jr.; M. H. Clench; D. W. Johnston; VI. Komarek; M. MorHon; R. I. C. Spearman; P. Stettenheim. Helpful suggestions and/or information have been given by J. J. Baumel, H. Berkhoudt, R. E. Brown, A. H. Brush, H. E. Evans, Gy. Feher,A. S. King, A. M. Lucas, J. McLelland, G. Michel, and G. A. Zweers. M. J. Spring prepared the figures. This chapter is contribution number 682 of the New York State Science Service.