﻿ACADEMY 
  OF 
  SCIENCES. 
  97 
  

  

  tains 
  behind 
  them. 
  A 
  notable 
  example 
  is 
  that 
  just 
  north 
  of 
  Judas 
  Head, 
  on 
  

   the 
  Island 
  of 
  Margarita. 
  

  

  To 
  the 
  northward 
  it 
  is 
  reasonable 
  to 
  suppose 
  that 
  the 
  ice 
  belt 
  lingered 
  longer 
  

   than 
  at 
  the 
  south, 
  and 
  that 
  when 
  it 
  was 
  dissipated, 
  the 
  destructive 
  agencies 
  of 
  

   great 
  climatic 
  changes 
  and 
  excessive 
  rainfall 
  were 
  much 
  more 
  active 
  and 
  wear- 
  

   ing. 
  Above 
  latitude 
  40^ 
  we 
  do 
  not 
  find 
  the 
  long, 
  gently 
  sloping 
  surfaces 
  of 
  dis- 
  

   integrated 
  material 
  ; 
  as 
  we 
  advance, 
  even 
  the 
  steep 
  sloping 
  hill 
  sides 
  give 
  way 
  to 
  

   the 
  fiord-like 
  coasts 
  of 
  Vancouver, 
  and 
  the 
  Archipelago 
  Alexander. 
  There 
  vio- 
  

   lent 
  storms,excessive 
  moisture 
  and 
  precipitation, 
  and 
  great 
  thermal 
  changes, 
  are 
  

   producing 
  a 
  hundred-fold 
  greater 
  effect 
  than 
  to 
  the 
  southward, 
  and 
  obliterating 
  

   whatever 
  evidences 
  existed 
  of 
  the 
  terrace 
  formation. 
  The 
  terraces 
  may 
  have 
  

   been 
  but 
  partially 
  developed 
  on 
  account 
  of 
  the 
  direction 
  of 
  the 
  movement 
  of 
  the 
  

   ice-belt 
  not 
  following 
  the 
  trend 
  of 
  the 
  coast 
  line 
  from 
  the 
  westward 
  ; 
  or 
  there 
  

   may 
  have 
  followed 
  a 
  subsidence 
  instead 
  of 
  an 
  elevation 
  of 
  the 
  continental 
  

   of 
  Alaska, 
  as 
  I 
  have 
  elsewhere 
  indicated. 
  

  

  For 
  illustrations 
  to 
  this 
  article, 
  see 
  Plate 
  V. 
  

  

  Kegular 
  Meeting, 
  Monday, 
  May 
  19th, 
  1873. 
  

   President 
  in 
  the 
  Chair. 
  

  

  Twenty-three 
  members 
  present. 
  

  

  Major-General 
  J. 
  M. 
  Schofield, 
  Eusebio 
  Molera, 
  and 
  Prof. 
  D. 
  

   McClure, 
  of 
  Oakland, 
  were 
  elected 
  resident 
  members 
  ; 
  and 
  Dr. 
  

   Franz 
  Steindachner, 
  of 
  Vienna, 
  Austria, 
  a 
  corresponding 
  member. 
  

  

  Donations 
  to 
  the 
  Museum 
  : 
  Specimen 
  of 
  a 
  Hawk 
  ; 
  also 
  speci- 
  

   mens 
  of 
  a 
  species 
  of 
  Fox 
  ( 
  Vulpes 
  Utioralis, 
  Baird), 
  the 
  latter 
  from 
  

   Santa 
  Rosa 
  Island, 
  by 
  W. 
  G. 
  W. 
  Harford. 
  Specimen 
  of 
  Trunk- 
  

   fish 
  (Ostracion), 
  from 
  Enderbury's 
  Island, 
  Lat. 
  3° 
  S., 
  Long. 
  176° 
  

   W., 
  found 
  under 
  the 
  edges 
  of 
  coral 
  reefs; 
  presented 
  by 
  C. 
  A. 
  Wil- 
  

   liams, 
  of 
  Honolulu. 
  Specimens 
  of 
  Velella 
  ; 
  also 
  fishes, 
  from 
  oft 
  

   Cape 
  St. 
  Lucas, 
  Lower 
  Cal., 
  by 
  Dr. 
  Schlatter, 
  of 
  the 
  P. 
  M. 
  S. 
  S. 
  

   Co. 
  Infusorial 
  Earth 
  from 
  Catalina 
  Cove, 
  Santa 
  Barbara 
  channel 
  ; 
  

   also 
  specimens 
  of 
  Gypsum, 
  from 
  Santiago 
  Cailon, 
  Los 
  Angeles 
  

   County, 
  presented 
  by 
  A. 
  W. 
  Chase, 
  U. 
  S. 
  Coast 
  Survey. 
  

  

  Dr. 
  James 
  Blake 
  read 
  the 
  following 
  : 
  

  

  Peoo. 
  Cal. 
  Acad. 
  Sci., 
  Vol. 
  V.— 
  7. 
  

  

  