98 The Structure of Protoplasm 



^ Kandelaky, B. S., Kolloid-Z., 1936, 74, 200. 



" Goodeve, C. F., Trans. Farad. Soc, 1939, 35, 342. 



='Freundlich, H., and SoUner, K., Kolloid-Z., 1928, 44, 309. 



'" See, e.g., Bungenberg de Jong, H. G., La coacervation, les coacervats, et 

 leur importance en biologic. Volumes 1 and 2, Paris, Hermann et Cie., 1936. 



"Daniel, F. K., hidia Rubber World, 101, Nos. 3 and 4, 1939. 



'' Freundlich, H., Jour. Soc. Chem. Ind., 1934, 53, 223 T., and especially South- 

 ern, W. A., Ph. D. Thesis, London, 1939. 



^ Verwey, E. J., and de Boer, J. H., Rec. trav. chivi., 1938, 57, 383. 



'" As to the nature of tactoids, see: Zocher, H., Z. anorgan. u. allg. Chem., 1925, 

 147, 91; Coper, K., and Freundhch, H., Trans. Farad. Soc, 1937, 33, 348; Heller, W., 

 ComiJt. rend., 1935, 201, 831. 



■■'^ Heller, W., unpublished. 



''Levine, S., Proc. Roy. Soc. London, (Series A), 1939, 170, 145, 165; Levine, S., 

 and Dube, S. P., Trans. Farad. Soc, 1939, 35, 1125, 1141. 



'= Freundlich, H., Enslin, O., and Sollner, K., Protoplasma, 1933, 17, 489. 



'^ Roder, H. L., Rheology of suspensions, A study of dilatancy and thixotropy, 

 Ph. D. Thesis, Amsterdam 1939; Heller, W., Compt. rend., 1938, 207, 157. 

 ''Heymann, E., Trans. Farad. Soc, 1935, 31, 846; 1936, 32, 1. 

 '' Freundlich, H., and Juliusburger, F., Trans. Farad. Soc, 1935, 31, 920. 

 " Hauser, E. A., and Reed, C. E., Jour. Phys. Chem., 1937, 41, 911, 



^^ Freundlich, H., Kapillarchemie, Leipzig, 4th ed., vol. 2, 1932, 616; Freund- 

 hch, H., Rogowski, F., and Sollner, K., Z. phxjs. Chem., A., 1932, 160, 469; Kolloid 

 Beihefte, 1933, 37, 223; Freundlich, H., and Sollner, K., Trans. Farad. Soc, 1936, 

 32, 966. 



'■° Burger, F. J., and Sollner, K., Trans. Farad. Soc, 1936, 32, 1598. 



^^^ Some newer reviews of the action of ultrasonics on biological objects are: 

 Dognon, A. and Biancani, E. H., Ultra-Sons et Biologie, Paris, Gauthier-Villards, 

 1937; Hiedemann, E., Grundlagen und Ergebnisse der Ultraschallforschung, Ber- 

 lin, Walter de Gruyter and Co., 1939, pp. 179-185. 



*" See, e. g., Bondy, C, and Sollner, K., Tratis. Farad. Soc, 1935, 31, 835; Sollner, 

 K., Jour. Phys. Chem., 1938, 42, 1071. 



" Freundlich, H., and Sollner, K., Trans. Farad. Soc, 1936, 32, 966. 



"Freundlich, H., and Gillings, D. W., Trans. Farad. Soc, 1938, 34, 649. See 

 there many additional references. 



''Heymann, E., Trans. Farad. Soc, 1935, 31, 846. 



"Brohult, S., Nature, 1937, 140, 805. 



'' Solhier, K., and Bondy, C, Trans. Farad. Soc, 1936, 32, 616. 



^^ Patterson, H. S., and Cawood, W., Nature, 1931, 127, 667; Brandt, O., and 

 Hiedemann, E., Trans. Farad. Soc, 1936, 32, 1101; Kolloid-Z., 1936, 75, 129; Brandt, 

 O., Freund, H., and Hiedemann, E., Kolloid-Z. 1936, 77, 103; da C. Andrade, E. N., 

 Trans. Farad. Soc, 1936, 32, 1111; etc. The best summary in: Hiedemann, E., 

 Grundlagen und Ergebnisse der Ultraschallforschung, Berlin, 1939. 



" Bjerknes, V., Vorlesungen liber hydrodynamische Fernkrafte nach C. A. 

 Bjerknes' Theorie, Leipzig, 1900-01; Kbnig, W., Ann. Phys. (Wiedemann), 1891, 

 42, 353, 549. Brandt, O., Freund, H., and Hiedemann, E., Kolloid-Z., 1936, 77, 103; 

 Zeitschr. j. Physik, 1937, 104, 511; etc. 



^^ Sollner, K., and Bondy, C, 1. c. 45; SoUner, K., Trans. Farad. Soc, 1936, 32, 

 1119; Brandt, O., and Hiedemann, E., and Brandt, O., Freund H., and Hiedemann, 

 E., 1. c. 46; for a review see pp. 199-201 in Hiedemann, E., Grundlagen und Ergeb- 

 nisse der Ultraschallforschung, Berlin, 1939. 



