﻿COHOES 
  MASTODON. 
  125 
  

  

  nine 
  and 
  one-half 
  per 
  cent. 
  As 
  the 
  former 
  bore 
  tusks 
  of 
  very 
  

   great 
  weight, 
  it 
  is 
  natural 
  to 
  infer 
  a 
  correlation 
  between 
  their 
  

   development 
  and 
  the 
  exceptional 
  strength 
  of 
  the 
  fore 
  legs. 
  The 
  

   proportions 
  of 
  the 
  Cambridge 
  Mastodon 
  and 
  Elephant 
  Pizarro, 
  

   are 
  in 
  accordance 
  with 
  the 
  idea, 
  but 
  the 
  data 
  at 
  hand 
  do 
  not 
  war- 
  

   rant 
  its 
  confident 
  proposition. 
  So 
  long 
  as 
  the 
  Warren 
  Mastodon 
  

   is 
  alone 
  in 
  showing 
  a 
  preponderance 
  of 
  strength 
  in 
  the 
  fore 
  legs, 
  

   we 
  cannot 
  be 
  sure 
  that 
  it 
  is 
  not 
  an 
  individual 
  variation. 
  

  

  The 
  Cambridge 
  skeleton 
  was 
  shown 
  by 
  a 
  similar 
  comparison 
  to 
  

   be 
  as 
  stoutly 
  built 
  as 
  the 
  Cohoes, 
  and 
  twenty-three 
  per 
  cent 
  

   stouter 
  than 
  the 
  Elephant 
  Pizarro. 
  

  

  Minoe 
  Anatomical 
  Peculiarities. 
  — 
  The 
  twentieth 
  right 
  rib 
  

   differs 
  from 
  all 
  others 
  except 
  the 
  first, 
  in 
  having 
  an 
  articular 
  sur- 
  

   face 
  on 
  the 
  neck. 
  It 
  is, 
  moreover, 
  abnormally 
  short, 
  and 
  its 
  distal 
  

   end 
  is 
  enlarged 
  so 
  as 
  to 
  form 
  a 
  sort 
  of 
  knob. 
  

  

  The 
  trapezoides, 
  which 
  in 
  the 
  Warren 
  and 
  Baltimore 
  skeleton, 
  

   is 
  sub-cubical 
  and 
  entire, 
  is 
  in 
  the 
  right 
  foot 
  of 
  the 
  Cohoes 
  divided 
  

   by 
  an 
  articulation 
  into 
  two 
  unequal 
  bones, 
  of 
  which 
  the 
  greater, 
  

   in 
  the 
  form 
  of 
  an 
  l 
  m 
  , 
  partially 
  encloses 
  the 
  less 
  : 
  the 
  correspond- 
  

   ing 
  part 
  of 
  the 
  left 
  foot 
  was 
  not 
  found. 
  

  

  The 
  scaphoides, 
  as 
  well 
  as 
  the 
  trapezoides, 
  offers 
  an 
  articular 
  

   surface 
  to 
  the 
  trapezium. 
  Dr. 
  W 
  T 
  arren 
  describes 
  and 
  figures 
  the 
  

   latter 
  as 
  touching 
  the 
  trapezoides 
  only, 
  tin 
  his 
  skeleton. 
  

  

  Sternum. 
  — 
  Material 
  is 
  as 
  yet 
  wanting 
  for 
  a 
  full 
  description 
  of 
  

   the 
  sternum 
  of 
  Mastodon 
  giganteus. 
  The 
  number 
  even 
  of 
  the 
  

   segments 
  is 
  in 
  doubt, 
  though 
  analogy 
  indicates 
  five, 
  the 
  number 
  

   in 
  M. 
  longirostris 
  (E. 
  Sismondi, 
  cited 
  by 
  Dr. 
  WTarren, 
  p. 
  199), 
  

   and 
  in 
  the 
  modern 
  species 
  of 
  Elephant. 
  

  

  The 
  Warren 
  skeleton 
  exhibits 
  the 
  first 
  member 
  only, 
  and 
  the 
  

   Cohoes 
  possesses 
  a 
  segment 
  of 
  somewhat 
  doubtful 
  position, 
  but 
  

   probably 
  the 
  second, 
  and 
  so 
  placed 
  in 
  articulation. 
  The 
  form 
  of 
  

   the 
  latter 
  is 
  irregularly 
  sphenoid, 
  the 
  inferior 
  face 
  being 
  the 
  nar- 
  

   rowest. 
  The 
  superior 
  face 
  is 
  four 
  and 
  one-fourth 
  inches 
  long 
  and 
  

   about 
  half 
  as 
  broad, 
  but 
  not 
  distinctly 
  limited 
  at 
  the 
  sides; 
  longi- 
  

   tudinally 
  it 
  is 
  slightly 
  concave, 
  and 
  transversely, 
  plane 
  in 
  the 
  

   middle, 
  but 
  at 
  the 
  sides 
  convex 
  and 
  confluent 
  with 
  the 
  lateral 
  

   faces. 
  The 
  lateral 
  face 
  is 
  a 
  little 
  shorter 
  than 
  the 
  superior, 
  and 
  

   measures 
  four 
  and 
  one-fourth 
  inches 
  in 
  heighth 
  at 
  the 
  middle. 
  Its 
  

   inferior 
  margin 
  is 
  convex 
  in 
  outline, 
  especially 
  toward 
  the 
  pos- 
  

  

  