296 Seifriz. — Observations on some Properties of Protoplasm. 
40. Stiles, W., and Jorgensen, I. : Studies in Permeability. IV. The Action of Various Organic 
Substances on the Permeability of the Plant Cell, and its bearing on Czapek’s Theory of 
the Plasma Membrane. Ann. Bot., vol. xxxi, pp. 47-76, 1917. 
41. — : Quantitative Measurement of Permeability. Bot. Gaz., vol. 
lxv, pp. 526-34, 1918. 
42. Taylor, C. V. : Demonstration of the Function of the Neuromotor Apparatus in Euplotes by 
the Method of Microdissection. Univ. Cal. Pubs., 1920. 
43. Taylor, W. W. : The Chemistry of Colloids. London, 1915. 
44. Vonwiller, P. : Uber den Bau des Plasmas der niedersten Here. Arch. Protistenk., vol. 
xxxviii, pp. 279-323, 1918. 
45. Wrzesniowski, A. : A Note on the Contractile Vacuole of Infusoria. (Russian) Pub. St. 
Petersburg Dept. Zool., 161-8, 1869. 
46. : Ein Beitrag zur Anatom ie der Infusorien. Arch. Mikr. Anat., vol. v, 
pp. 25-48, 1869. 
47. Yamanouchi, S. : The Life-History of Polysiphonia Violacea . Bot. Gaz., vol. xli, pp. 425-33, 
1906. 
