816 MORPHOGENESIS 



Popoff, M. 1907. Depression der Protozoenzelle und der Geschlechtszelle der 



Metazoen. Arch. Protistenk., (Suppl.) 1: 43-82. 

 Prowazek, S. 1904. Beitrage zur Kenntnis der Regeneration und Biologie der 



Protozoen. Arch. Protistenk., 3: 44-59. 

 Reynolds, B. D. 1924. Interaction of protoplasmic masses in relation to the 



study of heredity and environment in Arcella polypora. Biol. Bull., A6: 



106-40. 

 Reynolds, M. E. 1932. Regeneration in an amicronucleate infusorian. J. exp. 



Zool., 62: 327-61. 

 Rosel von Rosenhof, A. S. 1755. Insekten Belustigung. 3 vols., Nurnberg. 

 Runyan, E. M., and H. B. Torrey. 1914. Regulation in Vorticella. Biol. 



Bull, 27: 343-45. 

 Schwartz, V. 1934. Versuche iiber Regeneration und Kerndimorphismus der 



Ciliaten. Nachr. Ges. wiss. Gottingen, math.-physik., N.F. 1: 143-55. 



1935. Versuche iiber Regeneration und Kerndimorphismus bei Stentor 



coeruleus Ehrbg. Arch. Protistenk., 85: 100-39. 



Seyd, E. L. 1936. Studies on the regulation of Spirostomutn amhignuni. Arch. 



Protistenk., 86: 454-70. 

 Sokoloff, B. 1922. Le Noyau est-il indispensable a la regeneration des Proto- 



zoaires.' C R. Soc. Biol. Paris, 87: 1144-47. 



1923. Hunger and regeneration. J. R. micr. Soc, London, 1923, 183- 



89. 



1924. Das Regenerationsproblem bei Protozoen. Arch. Protistenk., 47: 



143-252. 



Stevens, N. M. 1903. Further studies on the ciliate infusoria, Lichnophora and 



Boveria. Arch. Protistenk., 3: 1-43. 

 Stoic, A. 1910. Tiber kernlosen Individuen und kernlose Teile von Amoeba 



proteus. Roux Arch. EntwMech. Organ., 29: 152-68. 

 Summers, F. M. 1938a. Some aspects of normal development in the colonial 



ciliate Zoothamnium alternans. Biol. Bull., 74: 111 -29. 



1938b. Form regulation in Zoothammum alternans. Biol. Bull., 74: 



130-54. 



Tartar, V. 1939. The so-called racial variation in the power of regeneration in 



Faraniecium. J. exp. Zool., 81: 181-208. 

 Taylor, C. V. 1928. Protoplasmic reorganization in Ur onychia unc'inata, sp. 



nov., during binary fission and regeneration. Physiol. Zool., 1: 1-25. 

 Taylor, C V., and W. P. Farber. 1924. Fatal effects of the removal of the 



micronucleus in Euplotes. Univ. Cal. Publ. Zool., 26: 131-43. 

 Thon, K. 1905. Uber den feineren Bau von Didinium nasutum O. F. M. Arch. 



Protistenk., 5: 281-321. 

 Tittler, I. A. 1935. Division, encystment, and conjugation in Urostyla grandis. 



Cellule, 44: 189-218. 



1938. Regeneration and reorganization in Uroleptus mobil/s follow- 

 ing injury by induced electric currents. Biol. Bull., 75: 533-41. 



