184 PAUL WEISS 



12. Detwiler, S. R. Restitution of the medulla following unilateral ex- 

 cision in the embryo. /. Exp. Zool., pd, 129, 1944. 



13. Ebeling, A. H. A pure strain of thyroid cells and its characteristics. 

 J.Exp. Med., 41, 337, 1925. 



14. Fischer, Albert. Tissue Culture. Levin and Munksgaard, Copenhagen, 



1925. 



15. Gerard, R. W. Nerve metabolism. Physiol. Rev., 12, 469, 1932. 



16. Gliicksmann, A. Development and differentiation of the tadpole eye. 

 Brit. J. Ophthal., 24, 153, 1940. 



17. Harrison, R. G. Correlation in the development and grovi^th of the eye 

 studied by means of heteroplastic transplantation. Arch. f. Entw. 

 -Mech., 120, I, 1929. 



18. Holtfreter, Johannes. Neural differentiation of ectoderm through ex- 

 posure to saline solution. /. Exp. Zool., g^^, 307, 1944. 



19. Huxley, Julian S. Problems of Relative Grozvth. Methuen & Co., 

 London, 1932. 



20. Hyden, Holger. Protein metabolism in the nerve cell during growth 

 and function. Acta Physiol. Scand., 6 (Suppl. xvii), i, 1943. 



21. Just, E. E. The Biology of the Cell Surface. P. Blakiston's Son & Co., 

 Philadelphia, 1939. 



22. Klatt, B. Filtterungsversuche an Tritonen. L AUgemeines. Wachstums- 

 verhaltnisse. Darmlange. Arch. f. Enfzv. -Mech., 10/, 314, 1926. 



23. Langmuir, L Molecular layers. Pilgrim Trust Lecture, Proc. Roy. Soc. 

 London, Ser. A, 770, i, 1939. 



24. Lewis, W. H. The superficial gel layer and its role in development. 

 Biol. Bull., 8/, 154, 1944. 



25. Mollendorff, M. von. Dber Histiozytenbildung aus Fibrocytenrein- 

 kulturen des erwachsenen Kaninchens nach leichten chronischen Reiz- 

 ungen. Zeit. Zellforsch., 12, 559, 1931. 



26. Moore, Carl R. Prostate gland induction in the female opossum by 

 hormones, and the capacity of the gland for development. Am. J. Anat., 



7^, I. 1945- 



27. Nageotte, J. L' Organisation de la Maticre dans ses Rapports avec la 



Vie. Alcan, Paris, 1922. 



28. Needham, Joseph. Chemical Embryology. Cambridge University Press, 



1931- 



29. Needham, Joseph. Chemical heterogony and the ground-plan of ani- 

 mal growth. Biol. Rev., p, 79, 1934. 



30. Palay, Sanford L. Neurosecretion. V. The origin of neurosecretory 

 granules from the nuclei of nerve cells in fishes. /. Comp. Neur., jg, 

 247, 1943. 



31. Parker, Raymond C. Physiologische Eigenschaften mesenchymaler 

 Zellen in vitro. Arch. f. Exp. Zellforsch., 8, 340, 1929. 



32. Pauling, Linus. Molecular structure and intermolecular forces, in 

 Landsteiner's Specificity of Serological Reactions. Harvard Univer- 

 sity Press, 1946. 



