1. Beament, J. W. L., Water relations of insect cuticles. Biol. Rev.36, 381 (1961).
2. Bingeman, C. W., Varner, J. E. and Martin, W. P., The effect of the addition of organic materials on the decomposition of an organic soil. Soil Sci. Soc. Am. Proc.12, 34 (1953).
3. Breed, R. S., Murray, E. G. D. and Smith, N. R., Bergy's Manual of Determinative Bacteriology. Bailere, Tindall & Cox., London (1957).
4. Comstock, J. H., The Wings of Insects. Comstock Publishing C., New York (1918).
5. Craseman, The nutrition ofChytridium andMacrochytridium. Am. J. Bot.41, 302 (1954).