88 SCIENCE PROGRESS 



Preparation of Pure Liquids 



Spring, Rec. des Pr. Chim. des Pays-Bas, 18, pp. 153, 231, 1899. 



ROBRY DE BRUYN and WOLFF, Pec. des Pr. Chim. des Pays-Bas, 23, p. 155, 1900. 



Biltz, Gottingen Nachrichten, Math. Phys. Klasse, 1904. 



Osmotic Pressure of Colloids 



Duclaux, Compt. Rend. Acad. Sc. 140, p. 1544, 1905. 

 Malfitano, Compl. Rend. Acad. Sc. 142, pp. 1418, 1421, 1906. 



Enzymes as Colloids 

 Bayliss, The Nature of Enzyme Action (Longmans, Green & Co.), 1908, chap. 3. 



Brownian Movements 



GOUY, Journal de Physique, 7, p. 562, 1888 ; Rev. Gen. des Sciences, 6, p. 1, 1895. 



EINSTEIN, Annalen d. Physik, 17, 3, pp. 549-60, 1905. 



Langevin, Compt. Rend. 146, pp. 503-33, 1908. 



Henri, Compt. Rend. 146, p. 1026, May, 1908. 



Chaudesaigues, Compt. Rend. 147, pp. 1044, 1046, November 1908. 



SEDDIG, Phys. Zeitschr. pp. 465-8, 1908. 



SMOLUCHOWSKI, Acad. Sci. Cracovie Bull. 7, pp. 577-602, 1906 ; Ann. d. Physik, 



21, 4, pp. 756-80, 1906. 

 Perrin, Compt. Rend. 146, p. 967, May 1908 ; 147, pp. 530-2, September 1908 ; 



p. 594, October 1908 ; pp. 475-6, 1908. 



In Smoke and Dust Particles 



PUCCIANTI and Vigezzi, Archivio di Fisiologia, 2, p. 318, 1904. 

 De BrOGLIE, Annal. Chem. Phys. 16, pp. 5-69, January 1909. 



Electrical Properties of Colloids 



Hardy, Proc. Roy. Soc. 65, p. 100, 1899 ; 66, p. 95, 1900 ; Journal of Physiology, 



29, p. 26, 1903. 

 Perrin, Journ. de Chemie Physique, 2, pp. 601-51, 1904 ; 3, pp. 50-110, 1905. 

 Malfitano, Compt. Rend. 142, p. 1277, 1906. 

 Burton, E. F., Phil. Mag. 11, p. 425, 1906 ; 12, p. 472, 1906. 

 BiLTZ, Zeitschr. f. Phys. Chem. 58, pp. 288-92, 1907. 

 NOYES, Joitrn. Amer. Chem. Soc. vol. 27, No. 2, p. 85. 



Coagulation of Colloids 



Graham, Collected Papers, p. 580. 



Schulze, Journ. Prakt. Chem. 25, p. 431, 1882. 



Prost, Acad. Roy. Sci. de Belg. 3, 14, p. 312, 1887. 



PlCTON and Linder, Journ. Chem. Soc. Trans. 67, p. 63, 1895. 



Whetham, Solution and Electrolysis (Camb. Univ. Press), p. 395, 1902 ; Phil. 



Mag. 57, 48, p. 474, 1899. 

 Hardy, Journ. of Physiology, 29, p. 29, 1903. 

 Duclaux, Journ. Chem. Phys. 5, 1, 2, 3, p. 29. 



