THE NEURON 



577 



the proliferation of the neurilemiual cells of the isolated part, to form 

 a large number of spindle cells. At the same time, the products of 



Fu. 317. WALLERIAN DEGENERATION IN A CAT. MARCHI METHOD OF STAINING. 

 X 600. (Mott, from Allbutt's " System of Medicine." ) 



degeneration are removed by. invading leucocytes, possibly also 

 through the agency of these spindle cells themselves, so that, when 



FIG. 318. A, SECTION UNDER HIGH POWER SHOWING REGENERATION AFTER SECTION 

 OF SCIATIC NERVE OF KITTEN, ONE MONTH AFTER OPERATION. ACTIVE RE- 

 GENERATION HAS OCCURRED, AS SHOWN BY OUTGROWTH OF NEUROFIBRILS ACROSS 



THE SEAT OF LESION, x 300. B, THE SAME x 80. (Mott.) 



all signs of degeneration are removed, the isolated part of the nerve- 

 fibre consists of these proliferated spindle cells. 



37 



