558 GROWTH 



Hegerty, C. P. 1939. Physiological youth as an important factor in adaptive 



enzyme formation. J. Bact., 37: 145-52. 

 Hetherington, A. 1932. The constant culture of Stentor coeruleus. Arch. 



Protistenk., 76: 118-29. 



1936. The precise control of growth in a pure culture of a ciliate 



Glaucoma pyriformis. Biol. Bull., 70: 426-40. 



Huntington, E., and C.-E. A. Winslow. 1937. Cell size and metabolic activity 



at various phases of the bacterial culture cycle. J. Bact., 33: 123-44. 

 Huxley, J. S. 1932. Problems in relative growth. London. 

 Huxley, J. S., and G. Teissier. 1936. Terminology of relative growth. Nature, 



137: 780-81. 

 Jahn, T. L. 1929. Studies on the physiology of the Euglenoid flagellates. I. 



The relation of the density of population to the growth rate of Euglena. 



Biol. Bull., 57: 81-106. 



1930. Studies etc. II. The autocatalytic equation and the question of 



an autocatalyst in the growth of Euglena. Biol. Bull., 58: 281. 



1933. Studies on the oxydation-reduction potential of protozoan cul- 

 tures. I. The effect of -SH on Chilonionas Paramecium. Protoplasma, 

 20: 90-104. 



1934. Problems of population growth in the Protozoa. Cold Spring 



Harbor Symp. Quant. Biol., 2: 167-80. 



1935. Studies etc. VI. The effects of temperature and of acetate on 



Euglena gracilis cultures in the dark. Arch. Protistenk., 86: 251-57. 



1936. Effect of aeration and lack of CO, on growth of bacteria-free 



cultures of Protozoa. Proc. Soc. exp. Biol. N. Y., 33: 494-98. 



Jennings, H. S. 1908. Heredity, variation and evolution in Protozoa II. Proc. 

 Amer. phil. Soc, 47: 393-546. 



Johnson, D. E. 1936. Growth of Glaucoma ficaria Kahl in cultures with 

 single species of other organisms. Arch. Protistenk., 86: 359-78. 



Johnson, W. H. 1933. Effects of population density on the rate of reproduc- 

 tion in Oxytricha. Physiol. Z06I., 6: 22-54. 



1935. Isolation of Glaucoma ficaria Kahl in bacteria-free cultures and 



growth in relation to the pH of the media. Arch. Protistenk., 86: 263-77. 



1936. Studies in the nutrition and reproduction of Paramecium. Physiol. 



Zool., 9: 1-14. 



1937. Experimental populations of microscopic organisms. Amer. Nat., 



71: 5-20. 



Johnson, W. H., and G. Hardin. 1938. Reproduction of Paramecium in old 



culture medium. Physiol. Zool., 11 : 333-46. 

 Jones, E. P. 1928. Population curves of Paramecium. Proc. Pa. Acad. Sci., 



2: 1927-28. 



1930. Paramecium infusion histories. I. Hydrogen ion change in hay 



and hay-flour infusions. Biol. Bull., 59: 275-84. 



