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a more proximal or a more distal origin, according to the position 

 of the roots of origin of the main nerves of the limb. 



3. The Dorsal Border Nerves. 



The lateral branches of several of the dorsal divisions of the 

 lower thoracic and lumbar spinal nerves become cutaneous over the 

 posterior surface of the buttock. The most distal spinal nerve to 



19 vertebra 



XXII spinal N 



iliohypogastric N 

 .inguinal N 



genitocrural N 

 lateral cut N 



. . femoral N 

 obturator N 



peroneal N 

 - tibial N 



Fig. 8. Plexus of type G. 



furnish such cutaneous branches varies in position from the XXI to 

 the XXIV spinal nerves. During the past two years we have paid 

 especial attention to these nerves. Satisfactory dissection of this 

 region is, however, difficult, so that records on which dependence could 



