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  38 
  Scientific 
  Intelligence. 
  

  

  A 
  discussion 
  of 
  the 
  several 
  restorations 
  of 
  Stegosaurus 
  which 
  

   have 
  been 
  attempted 
  follows. 
  

  

  In 
  his 
  later 
  paper, 
  Gilmore 
  speaks 
  most 
  interestingly 
  of 
  the 
  

   new 
  mount 
  of 
  Stegosaurus 
  stenops 
  which 
  has 
  just 
  been 
  assembled 
  

   under 
  his 
  supervision 
  in 
  the 
  National 
  Museum, 
  and 
  which 
  is, 
  now 
  

   that 
  the 
  Yale 
  specimen 
  is 
  dismantled 
  and 
  in 
  storage 
  pending 
  the 
  

   erection 
  of 
  the 
  new 
  Peabody 
  Museum, 
  the 
  only 
  mounted 
  skeleton 
  

   on 
  exhibition. 
  This, 
  together 
  with 
  the 
  articulated 
  skeleton 
  lying 
  

   in 
  situ 
  in 
  the 
  rock 
  and 
  the 
  great 
  life-sized 
  restoration 
  made 
  under 
  

   Lucas's 
  supervision, 
  makes 
  a 
  very 
  imposing 
  and 
  unique 
  array 
  of 
  

   these 
  most 
  bizarre 
  forms. 
  

  

  The 
  mounted 
  skeleton 
  is 
  considerably 
  smaller 
  than 
  that 
  at 
  Yale, 
  

   measuring 
  but 
  14 
  feet 
  9 
  inches 
  between 
  perpendiculars 
  as 
  

   against 
  19 
  feet 
  5 
  inches 
  for 
  the 
  Yale 
  specimen. 
  It 
  is 
  7 
  feet 
  

   11 
  inches 
  high 
  to 
  the 
  summit 
  of 
  the 
  highest 
  plate, 
  whereas 
  the 
  

   latter 
  measured 
  11 
  feet 
  10% 
  inches. 
  They 
  differ 
  in 
  the 
  rel- 
  

   atively 
  shorter 
  hind 
  limbs 
  of 
  the 
  former; 
  in 
  the 
  greater 
  droop 
  

   of 
  its 
  tail, 
  as 
  shown 
  by 
  the 
  more 
  wedge-shaped 
  form 
  of 
  the 
  caudal 
  

   centra 
  ; 
  in 
  the 
  reduction 
  of 
  unguals 
  of 
  the 
  foot, 
  but 
  two 
  of 
  which 
  

   Gilmore 
  thinks 
  were 
  visible 
  outside 
  of 
  the 
  fleshy 
  encasement 
  ; 
  and 
  

   in 
  the 
  number 
  and 
  arrangement 
  of 
  the 
  dermal 
  elements, 
  wherein 
  

   the 
  Yale 
  mount 
  may 
  have 
  been 
  in 
  error. 
  The 
  whole 
  appearance 
  

   of 
  the 
  animal, 
  with 
  the 
  knees 
  somewhat 
  flexed, 
  and 
  a 
  fuller 
  body, 
  

   differs 
  from 
  that 
  at 
  Yale, 
  and 
  is 
  suggestive 
  of 
  the 
  mounted 
  

   Camptosaurus 
  erected 
  by 
  Mr. 
  Gilmore 
  some 
  years 
  ago. 
  In 
  part, 
  

   at 
  any 
  rate, 
  these 
  differences 
  can 
  be 
  specific, 
  the 
  Yale 
  specimen 
  

   being 
  the 
  type 
  of 
  Stegosaurus 
  ungulatus, 
  in 
  part 
  due 
  to 
  age 
  and 
  

   size, 
  in 
  part 
  to 
  interpretation 
  of 
  material 
  which 
  has 
  been 
  sub- 
  

   jected 
  to 
  post-mortem 
  distortion 
  that 
  may 
  not 
  always 
  be 
  recog- 
  

   nizable 
  as 
  such. 
  

  

  Mr. 
  Gilmore 
  is 
  to 
  be 
  congratulated 
  on 
  his 
  very 
  real 
  contribu- 
  

   tions 
  to 
  our 
  knowledge 
  of 
  these 
  enigmatical 
  quadrupeds. 
  

  

  r. 
  s. 
  l. 
  

  

  9. 
  A 
  Large 
  Diamond 
  from 
  South 
  Africa.— 
  -It 
  has 
  been 
  

   recently 
  stated 
  in 
  the 
  public 
  press 
  that 
  a 
  diamond 
  of 
  a 
  soft 
  blue 
  

   color 
  and 
  having 
  the 
  remarkable 
  weight 
  of 
  388% 
  carats 
  has 
  

   been 
  found 
  at 
  the 
  Jagersfontein 
  mine 
  in 
  the 
  Orange 
  Free 
  State, 
  

   South 
  Africa. 
  This 
  is 
  the 
  largest 
  stone 
  found 
  since 
  the 
  famous 
  

   Cullinan 
  diamond 
  of 
  1905, 
  which 
  weighed 
  3,025 
  carats 
  (see 
  vol. 
  

   19, 
  395, 
  1905). 
  

  

  10. 
  The 
  Production 
  of 
  Precious 
  Stones 
  in 
  1917; 
  George 
  

   Frederick 
  Kunz. 
  Eeprinted 
  from 
  Mineral 
  Industry, 
  vol. 
  26, 
  

   pp. 
  576-601. 
  — 
  The 
  author 
  has 
  given 
  here 
  a 
  very 
  interesting 
  

   summary 
  of 
  the 
  production 
  of 
  precious 
  stones 
  during 
  1917. 
  

   The 
  statistics 
  are 
  particularly 
  valuable 
  as 
  to 
  the 
  production 
  

   and 
  price 
  of 
  diamonds 
  from 
  South 
  Africa 
  and 
  other 
  localities. 
  

   It 
  is 
  noted 
  that 
  the 
  output 
  of 
  diamonds 
  increased 
  from 
  2,246,300 
  

   carats 
  valued 
  at 
  $27,133,000 
  in 
  1916 
  to 
  2,902,400 
  carats 
  worth 
  

   $37,527,700 
  in 
  1917. 
  

  

  