KNI'l-AXA rit>\ OF Pr.A'I'K XV, 



]ii>in'1h'(i liasirelli. 

 Fit;'. 1 . Kiitiro niiimal. 

 ,, '1. Dissef'tioii to sliow visoorn. 

 ,, 3. Setii' (oiio iniinntni-e). 

 ,, 4. Gi-oups of anal tubes. 



