﻿bufo. 
  243 
  

  

  p. 
  70, 
  Mr. 
  "W. 
  H. 
  Warner 
  reports 
  having 
  seen, 
  on 
  

   Nov. 
  8th, 
  near 
  Abingdon, 
  Berks, 
  in 
  the 
  pools 
  of 
  a 
  

   deep 
  quarry 
  frequented 
  by 
  the 
  natterjacks, 
  tadpoles 
  in 
  

   a 
  half-torpid 
  state, 
  some 
  with 
  and 
  some 
  without 
  legs. 
  

   These 
  tadpoles 
  were 
  no 
  donbt 
  remains 
  of 
  an 
  exception- 
  

   all}^ 
  late 
  brood, 
  and 
  very 
  likely 
  did 
  not 
  transform 
  

   until 
  the 
  following 
  spring. 
  Males 
  are 
  much 
  more 
  

   abundant 
  than 
  females. 
  

  

  When 
  molested, 
  Bufo 
  calamita 
  emits 
  a 
  very 
  strong 
  

   and 
  unpleasant 
  odour, 
  produced 
  by 
  the 
  secretion 
  from 
  

   the 
  dermal 
  glands, 
  to 
  which 
  it 
  owes 
  the 
  denominations 
  

   of 
  fvetidissimus 
  and 
  rnephiticus 
  recorded 
  in 
  the 
  syno- 
  

   nymy. 
  It 
  is 
  difficult 
  to 
  convey 
  an 
  exact 
  idea 
  of 
  this 
  

   smell: 
  boiled 
  india-rubber 
  is 
  perhaps 
  a 
  better 
  compari- 
  

   son 
  than 
  that 
  of 
  Eosel 
  — 
  u 
  something 
  between 
  io-nited 
  

  

  CD 
  O 
  

  

  gunpowder 
  and 
  a 
  Dutch 
  clay 
  pipe 
  smoked 
  for 
  the 
  first 
  

   time;" 
  there 
  is 
  certainly 
  nothing 
  sulphury 
  about 
  it, 
  

   in 
  spite 
  of 
  a 
  statement 
  of 
  Lord 
  Clermont's. 
  

  

  Eggs. 
  — 
  Small, 
  black, 
  with 
  a 
  small 
  grey 
  or 
  whitish 
  

   lower 
  pole, 
  measuring 
  about 
  1^ 
  millimetres 
  in 
  dia- 
  

   meter, 
  in 
  two 
  mucilaginous 
  strings 
  3 
  or 
  4 
  millimetres 
  

   in 
  diameter, 
  which 
  are 
  shorter 
  than 
  in 
  B. 
  vulgaris. 
  

  

  Fig. 
  90. 
  

  

  • 
  • 
  * 
  . 
  « 
  • 
  # 
  «* 
  • 
  H2tH!i§ 
  11S!§% 
  i 
  

  

  These 
  strings 
  measure 
  only 
  5 
  or 
  6 
  feet, 
  when 
  im- 
  

   stretched. 
  and 
  contain 
  3000 
  to 
  4000 
  eo-gs, 
  which 
  are 
  in 
  

   two 
  files, 
  in 
  one 
  when 
  stretched. 
  The 
  evolution 
  is 
  

   rapid 
  ; 
  the 
  embryo 
  is 
  liberated 
  after 
  three 
  to 
  five 
  days, 
  

   and 
  produces 
  a 
  few 
  days 
  later 
  its 
  rudimentary, 
  

   unbranched 
  external 
  gills, 
  which 
  do 
  not 
  last 
  much 
  

   more 
  than 
  a 
  day. 
  Heron-Eoyer 
  has 
  described 
  the 
  

   changes 
  in 
  their 
  disposition 
  which 
  the 
  eggs 
  undergo 
  

   during 
  development. 
  At 
  first 
  in 
  two 
  files 
  they 
  become 
  

   displaced 
  as 
  they 
  enlarge, 
  and 
  form 
  a 
  single 
  row; 
  the 
  

  

  