﻿OF 
  THE 
  PYTHON. 
  125 
  

  

  sac. 
  It 
  is 
  bent 
  upon 
  itself, 
  forming 
  a 
  curve 
  which 
  embraces 
  the 
  

   cluster 
  of 
  biliary 
  tubes, 
  as 
  they 
  are 
  about 
  entering 
  the 
  intestine. 
  

   The 
  upper 
  portion 
  is 
  enlarged 
  into 
  a 
  head. 
  The 
  whole 
  gland, 
  when 
  

   removed 
  and 
  stretched 
  out, 
  measured 
  only 
  two 
  inches. 
  The 
  structure 
  

   of 
  the 
  pancreas 
  is 
  lobular 
  : 
  the 
  lobes 
  vary 
  in 
  size 
  from 
  one 
  line 
  to 
  three, 
  

   are 
  of 
  a 
  brownish 
  colour 
  and 
  very 
  numerous; 
  they 
  are 
  connected 
  

   merely 
  by 
  loose 
  cellular 
  membrane. 
  The 
  excretory 
  tubes 
  proceed 
  

   from 
  the 
  lobules, 
  run 
  in 
  company 
  with 
  the 
  biliary 
  ducts, 
  and 
  terminate 
  

   at 
  the 
  same 
  point 
  in 
  the 
  intestine, 
  already 
  described. 
  

  

  SPLEENS. 
  

  

  In 
  this 
  animal 
  there 
  are 
  two 
  spleens, 
  both 
  of 
  which 
  are 
  firmly 
  

   attached 
  to 
  the 
  parietes 
  of 
  the 
  stomach: 
  the 
  larger, 
  which 
  is 
  also 
  

   lower 
  down 
  in 
  its 
  position, 
  is 
  three 
  inches 
  long, 
  and 
  an 
  inch 
  and 
  a 
  

   half 
  broad; 
  the 
  smaller 
  is 
  two 
  inches 
  long 
  and 
  one 
  broad; 
  they 
  are 
  

   quite 
  distinct, 
  and 
  about 
  an 
  inch 
  apart. 
  A 
  cavity 
  exists 
  in 
  each 
  spleen, 
  

   which, 
  in 
  the 
  larger, 
  might 
  contain 
  about 
  half 
  a 
  drachm, 
  from 
  which 
  

   numerous 
  canals 
  pass 
  off 
  in 
  different 
  directions 
  towards 
  the 
  circum- 
  

   ference. 
  This 
  cavity 
  communicates 
  with 
  the 
  stomach 
  by 
  a 
  smooth 
  

   orifice 
  or 
  channel, 
  of 
  the 
  diameter 
  of 
  a 
  crow's 
  quill 
  ; 
  a 
  mass 
  of 
  hair, 
  

   rolled 
  into 
  a 
  ball, 
  occupied 
  the 
  main 
  cavity. 
  The 
  arteries 
  of 
  the 
  

   spleens 
  come 
  from 
  the 
  gastric, 
  while 
  the 
  veins 
  open 
  into 
  the 
  vena 
  portae. 
  

  

  URINARY 
  ORGANS. 
  

  

  The 
  kidneys 
  are 
  placed 
  in 
  the 
  fossae 
  on 
  the 
  side 
  of 
  the 
  spine, 
  reposing 
  

   upon 
  the 
  ribs. 
  The 
  right 
  kidney 
  is 
  larger, 
  and 
  also 
  placed 
  higher 
  up 
  

   than 
  the 
  other; 
  the 
  upper 
  end 
  being 
  about 
  one 
  foot 
  nine 
  inches 
  below 
  

   the 
  liver, 
  while 
  the 
  left 
  is 
  five 
  inches 
  lower. 
  There 
  are 
  about 
  two 
  

   inches 
  difference 
  in 
  their 
  lengths, 
  and 
  nearly 
  half 
  an 
  inch 
  in 
  their 
  

   diameters, 
  but 
  in 
  other 
  respects 
  they 
  are 
  precisely 
  alike. 
  The 
  kidney 
  

   is 
  attached 
  to 
  the 
  parietes 
  by 
  being 
  embraced 
  between 
  the 
  same 
  two 
  

   laminae 
  of 
  peritoneum 
  that 
  pass 
  off 
  to 
  surround 
  the 
  oviduct. 
  It 
  is 
  of 
  

   a 
  dark 
  brown 
  colour, 
  and 
  consists 
  of 
  flattened 
  oblong 
  lobes, 
  about 
  thirty 
  

   in 
  number 
  — 
  some 
  crescentic, 
  others 
  twisted 
  like 
  the 
  letter 
  S, 
  and 
  con- 
  

   nected 
  together 
  by 
  each 
  lobe 
  overlapping 
  its 
  successor. 
  This 
  arrange- 
  

   ment 
  commences 
  at 
  each 
  end, 
  and 
  proceeds 
  towards 
  the 
  centre, 
  where 
  

  

  VOL. 
  V. 
  2 
  G 
  

  

  