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descriptioii.  The  accompanying  fignres  give  an  idea  of  the  appearance 
of  the  sjmpathetic  nerves  and  theii-  terminal  organs  on  tlie  ordinary 
cross-striated  muscle  tibres. 
Fignres  1,  2,  3 and  4 are  drawn  trom  preparations  of  the  mm. 
interossei  mentioned  above.  (I  have  di-awn  the  tigures  with  the  help 
of  the  following  optical  aids  — Abbe’s  dravving  apparatns  and  Leitz 
immers.  Vu  ^ oenl.  4 tbr  tigs.  1,  2 and  3,  Rkicheht’s  drawing 
apparatns  and  Zeiss  apochr.  homog.  immers.  2 mm.  apert.  1.3comp. 
ocul.  6 for  tig.  4).  On  account  of  the  operalions,  that  Ihe  animal 
had  been  sitbjected  to,  and  on  account  of  tlie  length  of  the  period 
of  degeneration  there  is  reason  to  assnme  that  the  intact  nerves 
which  are  found  in  the  preparations  and  which  are  reprodiiced  in 
these  fignres  are  of  a sympathetic  and  [>ost-gangiionar  nature  — this 
is  more  especially  the  case,  as  I also  obtained  similar  resnlts  in  the 
animal  that  had  undergone  tlie  corresponding  opeiaxtion  but  in  which 
the  period  of  degeneration  had  been  ten  days. 
The  preparation  on  which  tig.  1 is  based  shows  at  d)  a degene- 
rated  spinal  nerve  that  ends  in  a similai’  degenerated  motoi' plate  on 
