4-88 Journal of Agricultural Research voi. v. No. n 



LITERATURE CITED 

 (i) Cunningham, Andrew. 



1915. Studies on soil protozoa. In Jour. Agr. Sci., v. 7, pt. i, p. 49-74. 



(2) GOODEY, T. 



191 1. A contribution to our knowledge of the protozoa of the soil. In Proc. 

 Roy. Soc. [London], s. B, v. 84, no. 570, p. 165-180, i fig., pi. 4. 



(3) 



[913. The excystation of Colpoda cucullus from its resting cysts, and the nature 

 and properties of the cyst membranes. In Proc. Roy. Soc. [London], 

 s. B, V. 86, no. 589, p. 427-439, 2 fig. 



(4) 



1914. Investigations on the protozoa of soil. (Abstract.) In Rpt. 83d Meeting 



Brit. Assoc. Adv. Sci., 1913, p. 775. 



(5) Koch, G. P. 



1915. Soil protozoa. In Jour. Agr. Research, v. 4, no. 6, p. 511-559. Litera- 



ture cited, p. 558-559. 



(6) Martin, C. H. 



1913. The presence of protozoa in soils. In Nature, v. 91, no. 2266, p. iii. 



(7) and Lewin, K. R. 



1914. Some notes on soil protozoa. In Phil. Trans. Roy. Soc. [London], s. B, 



V. 205, p. 77-94, pi. 5-6. 

 (8)- 



1915. Notes on some methods for the examination of soil protozoa. In Jour. 



Agr. Sci., V. 7, pt. I, p. 106-119, pi. 2-3. 

 (9) Russell, E. J., and Golding, J. 



191 1. Sewage sickness in soil, and its amelioration by partial sterilization. 



In Jour. Soc. Chem. Indus., v. 30, no. 8, p. 470-474. 

 (10) 



1912. Investigations on "sickness" in soil. In Jotir. Agr. Sci., v. 5, pt. i, 



p. 27-47. 



(11) and Petherbridge, F. R. 



1912. Investigations on "sickness ' in soil. II. "Sickness" in glasshouse 

 soils. In Jour. Agr. Sci., v. 5, pt. i, p. 86-111, pi. 2-5. 



(12) Sherman, J. M. 



1914. The number and growth of protozoa in soil. In Centbl. Bakt. [etc.], 

 Abt. 2, Bd. 41, No. 18/23, p. 625-630. 



(13) Wolff, Max. 



1909. Der Einfluss der Bewasserung auf die Fauna der Ackerkrume mit beson- 

 derer Beriicksichtigung der Bodenprotozoen. In Mitt. Kaiser Wil- 

 helms Inst. Landw. Bromberg, Bd. i, Heft 4, p. 382-401, 49 fig. 



