HALL, E. K. 1932. Die Wirkung regionaler Versch- 

 iedenheiten im Organisationszentrum. Zeitschr. 

 Wiss. Biol. Abt. D, Roux' Arch. Entwicklungsmech. 

 Org. 127: 573-574. (Animal??; production of abnorm- 

 al CNS by "trunk organizer" acting on presumptive 

 neural ectoderm as opposed to normal CNS produced 

 by "head organizer". ) 



1937. The deternnination of the axes of the 



embryonic ear: An experimental study by the method 

 of 90° rotations. Jour. Exp. Zool. 75: 11-34. (Am- 

 blystoma punctatum embryo; liability of polarization 

 of ear. ) 



1941. Reversal of polarization in the ear 



primordium of Amblystonna punctatum (Lenn.) Jour. 

 Exp. Zool. 86: 141-151. (Heterochronous transplant- 

 ations: embryos, neurulae; liability of polarization 

 otic vesicle. ) 



1942. The mode of action of lithium salts 



in amphibian development. Jour. Exp. Zool. 89: 1-34. 

 (Embryos; explantation after Li treatment, homoplastic 

 grafts; inhibition of differentiation by chemical action. ) 



and M. A. SCHNEIDERHAN. 1943. Spinal 



ganglion hypoplasia after limb annputation in the fetal 

 rat. Trans. Kentucky Acad. Sci. 11: 32. (An. 

 abstract. ) 



1945. 



Spinal ganglion hypoplasia after limb amputation in 

 the fetal rat. Jour. Comp. Neur. 82: 19-34. (Ex- 

 tirpation; hypoplasia of cell number, tissue volume. 

 Quantitative. ) 



HALLER, G. 1924. Uber die Entwicklung der Hypo- 

 physe bei Reptilien. Morphol. Jahrb. 53: 305-318. 

 (Histological study. ) 



1929. Die Gliederung des Zwischen und 



Mittelheims der Wirbeltiere. Jahrb. Morph. u. 

 Mikrosk. Anat. Abt. I. Gegenbaur's Morph. Jahrb. 

 63: 359-407. (Selachian embryos and adults; compar- 

 ison with reptiles, birds, and mamals; fate of various 

 neuromeres in development.) 



HAMBURGER, V. 1925. Uber den Einfluss des 

 Nervensystems auf die Entwicklung der Extremitaten 

 von Rana fusca. Arch. f. Entw.-Mech. 105: 149-201. 

 (Two geographical races frog tadpoles; extirpation of 

 one eye by surgery or thermal cautery; atypical 

 development of hind limbs as a result of maldevelop- 

 ment of CNS centers. See work of Durken and Luther 

 and Peterson. ) 



1927. Entwicklungsphysiologische Beziehung- 



en zwischen den Extremitaten der Annphibien und ihrer 

 Innervation. (Relations as to physiology of development 

 between the extremities of amphibians and their inner- 

 vation. ) Naturwissensch. 15: 677-681. (Sunnmary of 

 the work of Detwiler and Harrison; animal??; experi- 

 ments showing that the form of the limb plexus is 

 largely independent of the origin and bulk of nerves at 

 its disposal. Role of blood vessels in determining 

 nerve patterns.) 



1927. Entwicklungsphysiologische Beziehung- 



en zwischen den Extremitaten der Amphibian und ihrer 

 Innervation. (Developmental - physiological relations 

 between the limbs of Amphibia and their innervation. ) 

 Naturwissenschaften 15: 657-661. (Rana fusca, 

 Bombinator pachypus; embryos; extirpation of lunnbar 

 spinal cord just prior to closure neural folds; regener- 

 ation in some animals with normal limb development; 

 innervation of other hind limbs from other side of cord, 

 or from 12th spinal ganglion; atypical development of 

 bones and muscles with deficient abnormal or absent 

 innervation. Good sumnnary of literature on relations 

 of innervation to limb development.) 



HAMBURGER, V. 1928. Die Entwicklung experi- 

 mentell erzeugter nervenloser und schwach inner- 

 vierter Extremitaten von Anuren. (Embryology of 

 experimentally produced denervated and weakly 

 innervated extremitites in Anura. ) Zeitschr. Wiss. 

 Biol. Abt. D. Roux' Arch. Entw.-Mech. d. Org. 

 114: 272-363. (Bombinator pachypus, Rana fusca; 

 embryos; extirpation of spinal cord material at tinne 

 of closure nneduallary plate; insertion of mica between 

 cord and limb bud; trophic effect of spinal nerves on 

 limbs. ) 



1929. Experimentelle Beitrage zue Entwick- 



lungsphysiologie der Nervenbahnen in der Froschex- 

 trennitat (Rana temporaria). (Development of nerves 

 into the limbs of frogs.) Zeitschr. Wiss. Biol. Abt. 

 D. Roux" Arch. f. Entw.-Mech. d. Org. 119:47-99. 

 (Amphibia; mechanical blockage of innervation by 

 mica innplantation, removal of medullary tube; inner- 

 vation by nerves of opposite side; discussion of 

 factors directing nerves to linnb, controlling branch- 

 ing after their arrival.) 



1934. The effects of wing bud extirpation on 



the development of the central nervous system in 

 chick embryos. Jour. Exp. Zool. 68: 449-494. (Ex- 

 tirpation wing bud; hypoplasia of dorsal and ventral 

 horns of corresponding segments spinal cord. Rela- 

 tion of hypoplasia to mass of muscles removed, in- 

 fluence of peripheral field on CNS.) 



1939. Motor and sensory hyperplasia follow- 

 ing limb-bud transplantations in chick ennbryos. Phy- 

 siol. Zool. 12: 268-284. (Production of spinal hyper- 

 plasia by peripheral overloading.) 



and E. L. KEEFE. 1944. The effects of 



peripheral factors on the proliferation and differenti- 

 ation in the spinal cord of chick embryos. Jour. Exp. 

 'Zool. 96: 223-242. (Wing and leg extirpation; no 

 change in mitotic index; peripheral factors control 

 differentiation of neuroblasts. Quantitative.) 



and M. WAUGH. 1940. The primary develop- 

 ment of the skeleton in nerveless and poorly innervated 

 limb transplants of chick embryos. Physiol. Zool. 13: 

 364-382. (Heterotopic transplantation of limb buds; 

 normal early morphogenesis in the absence of inner- 

 vation; dennonstration of the trophic effect-of nerves.) 



HAMILTON, A. 1901. The division of differentiated 

 cells in the central nervous system of the white rat. 

 Jour. Comp. Neur. 11:297-320. 



HAMILTON, H. L. and H. PLOTZ. 1942. Use of 

 biotin for stimulating growth of nerve tissue and other 

 cells in vitro. Proc. Soc. Exp. Biol. N.Y. 50: 133- 

 135. 



HAMMAR, J. A. 1934. Konstitutionsanatomische 

 Studien iiber die Neurotisierung des Menschenembry- 

 os. I. Zur Bildungsgeschichte des Glomus caroticum. 

 II. Zur Histogenese der Paraganglien beim Menschen. 

 Jahrb. Morph. u. Mikrosk. Anat. Abt. II, Zeitschr. 

 Mikrosk. -Anat. Forsch. 35: 602-630. (Histological 

 differentiation; degeneration and regeneration in para- 

 ganglia (spontaneous.).) 



1935. Konstitutionsanatomische Studien iiber 



die Neurotisierung des Menschen-embryos. III. Ober 

 den Aufbau des Plexus Solaris. Jahrb. Morph. u. 

 Mikrosk. Anat. Abt. II, Zeitschr. Mikrosk. -Anat. 

 Forsch. 37: 519-537. (Sympathetic origin of solar 

 plexus. No contributions seen from phrenic or vagus 

 nn. ) 



39 



