﻿CONNECTIVE 
  TISSUE 
  OF 
  THE 
  LOCUST. 
  197 
  

  

  cular 
  system 
  under 
  this 
  head 
  had 
  the 
  time 
  at 
  my 
  disposal 
  permitted 
  my 
  

   investigating 
  it. 
  

  

  In 
  the 
  connective 
  tissue 
  we 
  find, 
  first, 
  long 
  fibres 
  upon 
  which 
  sit 
  small 
  

   compressed 
  and 
  elongated 
  nuclei 
  (Fig. 
  6 
  con.), 
  and 
  which 
  form 
  a 
  loose 
  

   network 
  ; 
  second, 
  the 
  pale 
  round 
  cells, 
  with 
  a 
  nucleus 
  at 
  the 
  periphery 
  

   (Leydig's 
  zellig 
  blasiges 
  Geicebe 
  263 
  ) 
  : 
  third, 
  the 
  fat-cells 
  264 
  (Fig. 
  15); 
  and, 
  

   fourth, 
  the 
  connective 
  tissue 
  with 
  stout 
  trabecule 
  and 
  small 
  meshes 
  

   around 
  the 
  ovary 
  (Fig. 
  17). 
  I 
  shall 
  here 
  speak 
  only 
  of 
  the 
  third 
  and 
  

   fourth 
  kinds 
  of 
  tissue. 
  The 
  " 
  Fettkoiper" 
  of 
  the 
  Germans, 
  or 
  the 
  fat- 
  

   body, 
  is 
  generally, 
  and 
  I 
  think 
  correctly, 
  supposed 
  to 
  be 
  merely 
  a 
  mod- 
  

   ification 
  of 
  the 
  connective 
  tissue. 
  Fig. 
  15 
  is 
  from 
  a 
  section 
  cut 
  from 
  

   the 
  object 
  after 
  it 
  had 
  been 
  imbedded 
  in 
  paraffine, 
  so 
  that 
  the 
  action 
  of 
  

   turpentine 
  on 
  the 
  cells, 
  while 
  the 
  object 
  was 
  being 
  prepared 
  for 
  imbed- 
  

   ding, 
  probably 
  altered 
  their 
  appearance 
  from 
  what 
  is 
  natural 
  by 
  dis- 
  

   solving 
  a 
  portion 
  of 
  the 
  fat 
  they 
  originally 
  contained. 
  In 
  a 
  preparation 
  

   of 
  this 
  kind, 
  which 
  has 
  b 
  een 
  colored 
  by 
  hseinatoxiline, 
  the 
  outlines 
  

   and 
  nuclei 
  of 
  the 
  cells 
  appear 
  very 
  distinctly. 
  The 
  cells 
  are 
  nearly 
  of 
  

   uniform 
  size, 
  and 
  so 
  crowded 
  together 
  (Fig. 
  15) 
  that 
  their 
  walls 
  are 
  flat- 
  

   tened 
  by 
  mutual 
  pressure. 
  The 
  nucleus 
  is 
  placed 
  in 
  the 
  center 
  of 
  the 
  

   cell 
  and 
  is 
  nearly 
  or 
  quite 
  spherical, 
  and 
  especially 
  characterized 
  by 
  

   containing 
  some 
  fifteen 
  to 
  twenty 
  or 
  more 
  large 
  granules 
  of 
  nearly 
  uni- 
  

   form 
  size 
  and 
  darkly 
  colored 
  by 
  the 
  logwood, 
  while 
  the 
  intervening 
  

   spaces 
  are 
  quite 
  pale 
  and 
  clear. 
  The 
  nature 
  of 
  the 
  body 
  of 
  the 
  cell 
  is 
  

   obscured 
  by 
  numerous 
  indistinct 
  lines 
  and 
  dots, 
  the 
  real 
  nature 
  of 
  which 
  

   I 
  have 
  been 
  unable 
  to 
  make 
  out. 
  

  

  Graber 
  has 
  described 
  some 
  interesting 
  peculiarities 
  in 
  the 
  fatbody 
  of 
  

   insects, 
  especially 
  in 
  Pthirias. 
  265 
  He 
  found 
  the 
  cells 
  in 
  this 
  insect 
  to 
  be 
  

   elongated, 
  charged 
  with 
  greenish 
  pigment, 
  with 
  spherical 
  nuclei. 
  One 
  

   end 
  of 
  the 
  cells 
  is 
  pointed 
  and 
  free, 
  the 
  other 
  is 
  united 
  with 
  a 
  cord 
  of 
  

   connective 
  tissue, 
  the 
  ultimate 
  course 
  of 
  which 
  he 
  could 
  not 
  follow. 
  

   Graber 
  suggests 
  that 
  these 
  cords 
  contain 
  trachea 
  running 
  to 
  terminate 
  

   in 
  the 
  fat-cells 
  themselves. 
  Besides 
  these 
  Graber 
  saw 
  other 
  fat-cells 
  in 
  

   which 
  he 
  discerned 
  no 
  nucleus. 
  The 
  presence 
  of 
  pigment 
  in 
  the 
  fat- 
  

   cells 
  is 
  very 
  common. 
  The 
  pigment 
  is 
  usually 
  green 
  or 
  yellow, 
  but 
  

   sometimes 
  of 
  other 
  colors. 
  

  

  As 
  regards 
  the 
  connective 
  meshes 
  with 
  stout 
  trabecule 
  around 
  the 
  

   follicles 
  of 
  the 
  ovary, 
  I 
  believe 
  that 
  Fig. 
  17 
  illustrates 
  its 
  appearance 
  in 
  

   the 
  locusts 
  better 
  than 
  any 
  description 
  I 
  could 
  give. 
  I 
  will, 
  therefore, 
  

   only 
  call 
  attention 
  to 
  the 
  rounded 
  form 
  of 
  the 
  openings 
  and 
  their 
  un- 
  

   equal 
  size, 
  and 
  I 
  have 
  often 
  seen 
  them 
  much 
  larger 
  than 
  any 
  in 
  Fig. 
  17. 
  

   Of 
  this 
  same 
  ovarian 
  tissue 
  I 
  have 
  obtained 
  very 
  beautiful 
  preparations 
  

   from 
  Anabrus 
  (Fig. 
  G2), 
  showing 
  both 
  its 
  fibrous 
  character 
  and 
  the 
  shape 
  

   and 
  form 
  of 
  its 
  nuclei. 
  The 
  fibres 
  are 
  exceedingly 
  fine, 
  and 
  show 
  a 
  tend- 
  

  

  ^Leydig 
  Vom 
  Bau 
  des 
  Thierischen 
  Korper's. 
  Tubingen, 
  1864, 
  p. 
  29. 
  

  

  264 
  See 
  particularly 
  Leydig 
  Ueber 
  den 
  Fettkorper 
  der 
  Arthropoden, 
  Midler's 
  Arch., 
  1863, 
  p. 
  192. 
  

  

  265 
  Graber 
  Z. 
  Z., 
  xxii, 
  p. 
  152-157. 
  Taf. 
  xi, 
  fig. 
  7 
  b. 
  

  

  