DETWILER, S. R. 1927. Medulla injury in relation 

 to cellular preliferation in Amblystoma ennbryos. Anat. 

 Rec. 35: 91-97. (Initial hyperplasia followed by com- 

 pensatory retardation after medullar injury; bearing 

 on interpretation of experiments on role of hyperpla- 

 sia in development of nervous systenn. ) 



1927. Experimental studies on Mauthner's 



cell in Amblystoma. Jour. Exp. Zool. 48: 15-30. 

 (Effects of excision Matuhner's cell in ennbryos on 

 motor coordination.) 



1927. The effects of extensive muscle loss 



upon the development of spinal ganglia in Amblystoma. 

 Jour. Exp. Zool. 48: 1-14. (Tail-bud embryos; 

 partial myotomectomy; effects of reduction in muscle 

 and in skin fields on reduction of number spinal 

 ganglion cells. Quantitative.) 



1928. Experiments on the reversal of the an- 

 terior end of the spinal cord in Amblystoma embryos. 

 Jour. Comp. Neur. 45: 191-209. (maintenance of in- 

 herent gradient of proliferation in spite of reversal of 

 orientation; comparison with effects of sanne operation 

 on other levels of spinal cord. ) 



1928. Further experiments upon alteration of 



the direction of growth in amphibian spinal nerves. 

 Jour. Exp. Zool. 51: 1-35. (Amblystoma; embryos; 

 replacement of limb bud with eye or nasal placode; 

 "attraction" of adjacent spinal nerves by ectopic 

 sense organs; nonspecific nature of nerve growth.) 



1928. The development of the spinal cord in 



Amblystoma embryos following unilateral myotomec- 

 tonny. Jour. Exp. Zool. 52: 325-349. (Unilateral ex- 

 tirpation somites; no effect on motor areas cord; 

 segnnentation motor roots in absence of sensory roots, 

 musculature; discussion of sensory and motor seg- 

 mentation. ) 



193 1. Heteroplastic transplantations of 



embryonic spinal cord segnnents in Amblystonna. 

 Jour. Exp. Zool. 60: 141-171. (A. tigrinum, A. 

 punctatum; heteroplastic grafts of brachial spinal 

 cord; regulation of graft size, cell numbers, in re- 

 lation to portion of cord grafted. ) 



1932. Further experiments upon the develop- 



nnent of spinal ganglia in Amblystoma. Jour. Connp, 

 Neur. 54: 173-193. (Extirpation of somites or pre- 

 somitic axial mesoderm in embryos; inhibition of 

 spinal ganglion development; observations on degree 

 of independent development possible. ) 



1932. Growth acceleration and regulation 



in heteroplastic spinal-cord grafts. Jour. Exp. Zool. 

 61: 245-276. (Embryos; substitution of A. tigrinum 

 for A. punctatum brachial spinal cord; resultant 

 growth of graft at rate greater than either host 

 or donor. ) 



1932. Experimental observations upon the 



developing rat retina. Jour. Comp. Neur. 55: 

 473-492. (Newborn rats; effect of rearing in light 

 or darkness on development of retina; genesis of 

 visual purple, formation; rods and cones; correlation 

 of histological and chemical differentiation.) 



1932. Further experiments upon accelerated 



growth in heterpolastic spinal cord grafts. Jour. 

 Comp. Neur. 56: 465-502. (Embryos; substitution of 

 A. tigrinun-i for A. punctatunn brachial spinal cord; 

 honnoplastic A. punctatum grafts; augmentation of 

 growth in heteroplastic grafts, inhibition in homo- 

 plastic. ) 



1933. Experimental studies upon the develop- 

 ment of the Amphibian nervous system. Biol. Rev. 

 8: 269. 



1928. Further experiments upon the trans- 

 plantation of embryonic spinal-cord segments. Jour. 

 Exp. Zool. 52: 351-366. (Amblystonna; heterotopic 

 grafting of cord segment; interchange of various levels 

 of cord; effect of level on resulting hyperplasia of 

 graft.) 



1929. Spinal cord in Amblystonna embryos 



following unilateral myotonnectomy. Jour. Exp. Zool. 

 52: 325-349. 



1929. Experinnental alteration of 



the direction of growth in annphibian spinal nerves. X^ 

 Congres Internation. Zool. a Budapest. Part I. 

 557-567. (Amblystoma; effect of rapid proliferation in 

 attracting nerve fibers; synchronous movement of 

 honnologous mnn. of normal and grafted limbs. Pro- 

 blenns of directive influences in growth of axons, union 

 with peripheral organs.) 



1929. Some observations upon grafted eyes of 



frog larvae. Zeitschr. Wiss. Biol. Abt. D, Roux' 

 Arch. Entw. -Mech. d. Org. 116:555-566. (Rana fusca; 

 ennbryos; homoplastic grafting of supernumerary eye 

 to eye field; observations on subsequent fusion and re- 

 gulation. Relations of optic nerves; effect of light on 

 pigment migration as related to CNS. ) 



1930. Further experimental studies upon mor- 

 phogenesis in the anterior portion of the spinal cord. 

 Jour. Comp. Neur. 50: 52 1-544. (Amblystoma em- 

 bryos; heterotopic transplantation of spinal cord 

 segments to new level with reversal of orientation; 

 corresponding reversal of polarity of proliferative 

 centers; maintenance of characteristic proliferative 

 capacity of graft as a whole. ) 



1933. Experimental studies upon the de- 

 velopment of the amphibian nervous systenn. Biol. 

 Rev. and Biol. Proc. Cannbridge Philos. Soc. 8: 

 269-3 10. (A review.) 



1933. Further experiments upon 



the extirpation of Mauthner's neurones in amphibian 

 embryos (Annblystoma mexicanunn). J,our. Exp. Zool. 

 64: 415-43 1. (A. mexicanum, A. punctatunn; larvae; 

 extirpation one or both M. "s neurones; lack of effect 

 on equilibrium, swinnnning; role in speed and precise 

 movements. ) 



1933. Experiments upon the segmentation of 



spinal nerves in salannander embryos. Proc. Nation. 

 Acad. Sci. U.S.A. 19: 22-29. (Annblystoma; excision 

 of spinal sonnites; replacement of anterior by snnall 

 posterior sonnites; excision neural crest; dependence 

 of spinal nerve segmentation on arrangement of somites 

 alone; no intrinsic nervous metamerism. ) 



1934. An experimental study of spinal nerve 



segmentation in Amblystoma with reference to the 

 plurisegmental contribution to the brachial plexus. 

 Jour. Exp. Zool. 67: 395-441. (Extirpation or 

 interpolation of mesodernnal somites; corresponding 

 changes in segmentation o£ spinal nerves.) 



1935. The developnnent of spinal ganglia 



following transplantation of the spinal cord with or 

 without sonnites. Anat. Rec. 61: 441-455. (Ambly- 

 stonna; heterotopic transplantation of spinal cord 

 with or without somites; dependence of segmentation 

 of spinal ganglia, on segmentation of adjacent mesoderm.) 



1936. Neuroennbryology. An experimental 



study. New York. The MacMillan Co. x/2 18 pp. 



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