BIBLIOGRAPHY 1 



1. Alechin, W. W. 1926 Was ist eine Pflanzengesellschaft? Beih. Repert. 



spec. nov. regni veget. 37. 



2. Allee, W. C. 1931 Animal aggregations. Chicago. 



3. Allee, W. C. 1932 A review of Chapman's "Animal ecology." Ecol- 



ogy. 13, p. 405. 



4. Allee, W. C. 1934 Recent studies in mass physiology. Biol. Rev. 9, 



p. 1. 



5. Bailey, V. A. 1931 The interaction between hosts and parasites. 



Quart. Journ. Math. (Oxford Series) 2, p. 68. 



6. Bailey, V. A. 1933 On the interaction between several species of hosts 



and parasites. Proc. Roy. Soc. A, 143, p. 75. 



7. Barker, H. A. and Taylor, C. V. 1931 A study of the conditions of 



encystment of Colpoda cucullus. Phys. Zool. 4, p. 620. 



8. Beauchamp, R. and Ullyott, P. 1932 Competitive relationships be- 



tween certain species of fresh-water triclads. Journ. Ecol. 20, p. 200. 



9. Beers, C. D. 1927 The relation between hydrogen-ion concentration 



and encystment in Didinium nasutum. J. Morph. 44, p. 21. 



10. Beers, C. D. 1933a Diet in relation to depression and recovery in the 



ciliate, Didinium nasutum. Arch. Protistenknd. 79, p. 101. 



11. Beers, C. D. 1933b The relation of density of population to rate of 



reproduction in the ciliates, Didinium nasutum and Stylonychia 

 pustulata. Arch. Protistenknd. 80, p. 36. 



12. Belar, A. 1928 Untersuchung der Protozoen. Peterfi Meth. wiss. 



Biol. 1, p. 735. 



13. Birstein, J. A. und VINOGRADOV, L. G. 1934 Die Susswasserdecapoden 



der U. S. S. R. und ihre geographische Verbreitung. Zool. Zeitschr. 

 13, p. 39 (in Russian). 



14. Bodenheimer, F. S. 1932 t)ber den Massenwechsel der Selachier- 



bevolkerung im oberadriatischen Benthos. Arch. Hydrob. 24, p. 667. 



15. Boltzmann, L. 1905 Populare Schriften. Leipzig. 



16. Braun-Blanquet, J. 1928 Pflanzensoziologie. Berlin. 



17. Brunelli, G. 1929 Equilibri biologici e preteso spolamento del mare. 



Riv. Biol. 11, p. 779-785. 



18. Calcins, G. N. 1915 Didinium nasutum. I. The life history. Journ. 



Exp. Zool. 19, p. 225. 



19. Calcins, G. N. 1933 The biology of Protozoa. Second Edition. 



20. Chapman, R. N. 1928 The quantitative analysis of environmental 



factors. Ecol. 9, p. 111. 



21. Chapman, R. N. 1931 Animal ecology. New York. 



1 This list of literature includes mainly references cited in the text. 



154 



