﻿Report 
  of 
  the 
  President. 
  33 
  

  

  mammals 
  and 
  reptiles 
  were 
  rearranged 
  and 
  several 
  new 
  speci- 
  

   mens 
  were 
  placed 
  on 
  exhibition, 
  also 
  a 
  new 
  system 
  of 
  labeling 
  

   was 
  introduced, 
  thereby 
  making 
  the 
  collections 
  more 
  intelligi- 
  

   ble 
  both 
  from 
  an 
  educational 
  and 
  scientific 
  point 
  of 
  view. 
  

   The 
  entire 
  collections 
  of 
  extinct 
  vertebrates 
  in 
  this 
  depart- 
  

   ment 
  contain 
  about 
  20,000 
  specimens. 
  Among 
  the 
  most 
  im- 
  

   portant 
  additions 
  to 
  the 
  exhibition 
  series 
  were 
  the 
  skeletons 
  

   of 
  the 
  Carnivorous 
  Dinosaur 
  Altosaurus, 
  and 
  of 
  the 
  Duck- 
  

   billed 
  Dinosaur 
  Trachodon, 
  both 
  specimens 
  of 
  which 
  are 
  from 
  

   the 
  Cope 
  Collection 
  presented 
  by 
  Mr. 
  Morris 
  K. 
  Jesup. 
  

   In 
  mounting 
  these 
  skeletons 
  an 
  attempt 
  has 
  been 
  made 
  to 
  

   represent 
  characteristic 
  features 
  of 
  the 
  life-history 
  and 
  envi- 
  

   ronment 
  of 
  these 
  extinct 
  monsters, 
  so 
  far 
  as 
  they 
  are 
  posi- 
  

   tively 
  known. 
  Thus 
  the 
  Allosaurus 
  is 
  mounted 
  in 
  the 
  atti- 
  

   tude 
  of 
  devouring 
  the 
  carcass 
  of 
  Brontosaurus. 
  One 
  Trachodon 
  

   skeleton 
  has 
  been 
  mounted 
  representing 
  the 
  characteristic 
  

   attitude 
  of 
  the 
  animal 
  when 
  feeding; 
  a 
  second, 
  nearly 
  ready 
  

   for 
  exhibition, 
  represents 
  the 
  animal 
  looking 
  out 
  for 
  danger. 
  

   These 
  two 
  skeletons 
  will 
  be 
  combined 
  on 
  a 
  base 
  made 
  to 
  illus- 
  

   trate 
  the 
  plants, 
  shells, 
  etc., 
  among 
  which 
  these 
  beasts 
  lived. 
  

  

  The 
  Warren 
  Mastodon, 
  presented 
  by 
  Mr. 
  J. 
  Pierpont 
  

   Morgan, 
  has 
  been 
  remounted 
  and 
  attracts 
  much 
  attention. 
  

   Among 
  other 
  specimens 
  which 
  have 
  been 
  prepared 
  and 
  added 
  

   to 
  the 
  collections 
  may 
  be 
  mentioned 
  the 
  skull 
  and 
  jaws 
  of 
  

   Tyrannosaurus, 
  a 
  portion 
  of 
  a 
  skeleton 
  of 
  JVaosaurus, 
  or 
  the 
  

   Ship-Lizard, 
  part 
  of 
  a 
  skeleton 
  of 
  Camarasaurus, 
  the 
  Shawan- 
  

   gunk 
  Mastodon 
  skull 
  and 
  the 
  skeleton 
  of 
  the 
  Arab 
  horse 
  

   "Nimr." 
  

  

  Through 
  the 
  generosity 
  of 
  Mr. 
  Morris 
  K. 
  Jesup, 
  an 
  expedi- 
  

   tion 
  was 
  sent 
  into 
  the 
  Fayum 
  desert 
  of 
  northern 
  Egypt 
  under 
  

   the 
  leadership 
  of 
  Curator 
  Osborn, 
  who 
  was 
  accompanied 
  by 
  

   Messrs. 
  Granger 
  and 
  Olsen 
  of 
  the 
  department 
  staff, 
  to 
  search 
  

   for 
  the 
  fossil 
  remains 
  of 
  the 
  ancestors 
  of 
  the 
  elephant. 
  This 
  

   resulted 
  in 
  the 
  discovery 
  of 
  a 
  number 
  of 
  animals 
  previously 
  

   unknown 
  to 
  science. 
  In 
  all 
  more 
  than 
  500 
  specimens 
  were 
  

   secured, 
  of 
  which 
  the 
  skulls, 
  jaws, 
  palates, 
  etc., 
  of 
  Mosrithe- 
  

   rinm 
  and 
  Palceomastodon, 
  illustrating 
  the 
  early 
  stages 
  of 
  the 
  

   ancestry 
  of 
  the 
  elephant, 
  are 
  most 
  important. 
  The 
  collection 
  

  

  