﻿rF 
  

  

  Am. 
  Jour. 
  J 
  

  

  9 
  Q°| 
  g. 
  ■—, 
  ,_ 
  

  

  

  

  

  

  Plate 
  III. 
  

  

  8CP 
  = 
  P 
  

  

  

  

  

  

  

  E= 
  

  

  == 
  

  

  

  . 
  ^Hi 
  

  

  

  

  

  

  

  

  ^1 
  _ 
  

  

  

  

  

  

  

  

  ^.•^ 
  

  

  

  

  

  

  

  

  

  

  ^"' 
  

  

  

  _^ 
  

  

  

  

  

  ^, 
  

  

  7 
  0P^ 
  

  

  Q§ 
  

  

  

  

  

  

  

  

  ^^^ 
  

  

  ^ 
  

  

  

  

  

  

  

  

  

  ^" 
  -t 
  — 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  *■""'' 
  

  

  ,J 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  -r^*^l 
  

  

  

  

  

  

  

  

  

  

  ^-■"i 
  

  

  

  

  

  

  

  

  60' 
  ^ 
  

  

  1 
  

  

  

  

  

  

  

  

  ' 
  

  

  ^ 
  

  

  

  

  

  

  

  

  .^^ 
  

  

  

  

  

  

  

  

  

  '"'"" 
  

  

  ^ 
  _^ 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  — 
  "" 
  

  

  

  

  

  

  

  

  

  ^^ 
  

  

  

  

  

  

  

  

  

  rr"" 
  ■ 
  

  

  

  

  

  

  

  

  

  

  ^-'' 
  

  

  

  

  

  

  

  

  ■—^"^ 
  

  

  

  

  

  

  

  

  

  5 
  0° 
  -g 
  r- 
  

  

  — 
  " 
  1 
  

  

  

  

  

  

  

  

  -~""" 
  

  

  

  

  

  

  

  

  

  

  -.. 
  . 
  

  

  

  

  

  

  

  "^" 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  r 
  _ 
  

  

  

  

  

  

  

  

  _— 
  

  

  ■ 
  

  

  

  

  

  

  

  

  

  __,— 
  - 
  

  

  

  

  

  

  

  

  " 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  4 
  O 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  , 
  - 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  , 
  

  

  

  

  

  

  

  

  

  3 
  0° 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  1 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  = 
  

  

  

  

  

  

  

  

  

  -== 
  

  

  

  

  

  

  

  

  2d 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  i 
  d 
  -= 
  = 
  

  

  ? 
  n= 
  i.4! 
  

  

  

  

  

  

  

  

  i. 
  

  

  2 
  or 
  

  

  