1. The relation of density of population to rate of reproduction in the ciliates Didinium nasutum and Stylonchia pustulata;Beers;Arch. Protistenk.,1933
2. The experimental production of life cycles in ciliates;Darby;Jour. Exp. Biol.,1928
3. Studies on growth acceleration in protozoa and yeast;Darby;Jour. Exp. Biol.,1930
4. Factors influencing the efficiency of photosynthesis;Emerson;Amer. Jour. Bot.,1939
5. Effects of population density on the rate of reproduction in Oxytricha;Johnson;Physiol. Zool.,1933