82 R. H. WHITEHEAD AND J. A. WADDELL 



NissL, F. 1903 Die Neuronenlehre und ihre Anhanger, pp. 282, 333. Jena. 



Ranson, S. W. 1906 Retrograde degeneration in the spinal nerves. Jour. 

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1908 The architectural relations of the afferent elements entering into 

 the formation of the spinal nerves. Jour. Comp. Neur. Psych., vol. 

 18, p. 101. 



1909 Alterations in the spinal ganglion cells following neurotomy. 

 Jour. Comp. Neur. Psych., vol. 19, p. 125. 



1909 A preliminary note on the non-medullated nerve fibers in the 

 spinal nerves. Anat. Rec, vol. 3, p. 291. 



Rawitz, B. 1880 Ueber den Bau der Spinalganglien. Arch. f. mikr. Anat. Bd. 

 18, S. 283. 



ScHiEFFERDECKER — citcd after Tuckett. 



TucKETT, J. L. 1895 On the structure and degeneration of non-medullated 

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Lenhossek, V. 1886 Untersuchungen iiber die Spinalganglien des Frosches. 

 Arch. f. mikroskop. Anat. Bd. 26, S. 370. 



1895 Der feinere Bau des Nervensystems. Berlin, 1895. 



Warrington, W. B. and F. Griffith. 1904 On the cells of the spinal ganglia 

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Weigner, K. 1905 Ueber den Verlauf des Nervus Intermedins. Anat. Hefte 

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PLATE 1 



explanation of figures 



1 From a transverse section of a human sciatic nerve. Cajal's method, a, 

 non-medullated fibers; b, large medullated fibres; c, small meduUated fiber. 

 X 600. 



2 From a cross section through a human sciatic nerve. Cajal's method. On 

 one side the fibers are cut transversely (o) and on the other obliquely (b). 

 Zeiss Compens. Ocu. 4; Obj. 4 mm. 



