﻿246 
  PROCEEDINGS 
  OF 
  THE 
  CALIFORNIA 
  

  

  la, 
  and 
  various 
  marine 
  specimens 
  ; 
  from 
  L. 
  H. 
  Thompson, 
  Buff 
  

   Cochin 
  chickens, 
  pi-eserved 
  in 
  alcohol, 
  and 
  remarkable 
  for 
  having 
  

   four 
  legs. 
  

  

  Mr. 
  Chase 
  read 
  a 
  paper 
  on 
  the 
  auriferous 
  sands 
  of 
  Gold 
  Bluff, 
  

   illustrating 
  it 
  by 
  drawings 
  and 
  sections 
  of 
  the 
  locality, 
  and 
  arriving 
  

   at 
  the 
  following 
  conclusions 
  : 
  

  

  First, 
  that 
  the 
  gold 
  evidently 
  comes 
  from 
  the 
  bluffs. 
  This 
  no 
  one 
  can 
  doubt 
  

   after 
  once 
  viewing 
  them.' 
  Secondly, 
  that 
  after 
  caves, 
  the 
  gold 
  obtained 
  is 
  

   much 
  coarser 
  in 
  character. 
  Thirdly, 
  that 
  it 
  is 
  only 
  after 
  a 
  continued 
  succes- 
  

   sion 
  of 
  swells 
  that 
  cut 
  the 
  beach 
  at 
  an 
  angle, 
  that 
  the 
  rich 
  sands 
  are 
  found. 
  

   When 
  the 
  surf 
  breaks 
  squarely 
  on, 
  let 
  the 
  storm 
  be 
  ever 
  so 
  heavy, 
  it 
  simply 
  

   loads 
  the 
  beaches 
  with 
  gravel. 
  Fourthly, 
  that 
  no 
  one 
  witnessing 
  the 
  power 
  of 
  the 
  

   surf, 
  breaking 
  as 
  it 
  does, 
  with 
  no 
  rocky 
  headlands, 
  points, 
  or 
  rocks 
  to 
  deaden 
  it, 
  

   can 
  doubt 
  that 
  it 
  must 
  have 
  an 
  immense 
  grinding 
  force. 
  Hence, 
  Mr. 
  Chase 
  

   believes 
  that 
  the 
  gold 
  follows 
  the 
  first 
  two 
  or 
  three 
  lines 
  of 
  breakers, 
  and 
  will 
  

   never 
  be 
  found 
  in 
  paying 
  quantities 
  beyond. 
  

  

  Mr. 
  Chase 
  sent 
  Prof. 
  J. 
  D. 
  Dana 
  specimens 
  of 
  the 
  sands 
  of 
  Gold 
  Bluff, 
  and 
  

   that 
  gentleman, 
  in 
  speaking 
  of 
  the 
  sands, 
  says 
  : 
  " 
  The 
  red 
  grains 
  in 
  the 
  sand 
  

   are 
  garnets. 
  It 
  is 
  altogether 
  probable 
  that 
  the 
  deposit 
  dates 
  partly 
  from 
  the 
  

   close 
  of 
  the 
  glacial 
  era 
  ; 
  that 
  is, 
  the 
  time 
  of 
  melting 
  of 
  the 
  ice 
  in 
  the 
  early 
  

   part 
  of 
  the 
  Charnplain 
  period, 
  when 
  floods 
  and 
  gravel 
  depositions 
  were 
  the 
  

   order 
  of 
  the 
  day, 
  and 
  partly 
  from 
  the 
  later 
  part 
  of 
  the 
  Champlain 
  period, 
  when 
  

   the 
  floods 
  were 
  but 
  partially 
  abated, 
  yet 
  the 
  depositions 
  were 
  more 
  quiet." 
  

  

  Mr. 
  W. 
  H. 
  Dall 
  presented 
  the 
  following 
  papers 
  : 
  

  

  Catalogue 
  of 
  Shells 
  from 
  Bering 
  Strait 
  and 
  the 
  adjacent 
  por- 
  

  

  tions 
  of 
  the 
  Arctic 
  Ocean, 
  with 
  descriptions 
  of 
  three 
  

  

  new 
  species.* 
  

  

  BY 
  W, 
  H. 
  DALL, 
  U. 
  S. 
  COAST 
  SURVEY. 
  

  

  Having 
  had 
  occasion 
  to 
  examine 
  several 
  collections 
  of 
  shells 
  brought 
  down 
  

   by 
  whalers 
  from 
  the 
  Arctic 
  Ocean 
  in 
  the 
  autumn 
  of 
  1873, 
  I 
  was 
  struck 
  by 
  the 
  

   fact 
  that 
  there 
  does 
  not 
  appear 
  to 
  be 
  any 
  catalogue 
  of 
  the 
  species 
  of 
  that 
  vicin- 
  

   ity. 
  Indeed, 
  the 
  region 
  has 
  been 
  visited 
  by 
  but 
  few 
  collectors, 
  and 
  the 
  species 
  

   have 
  been 
  commonly 
  described 
  among 
  a 
  crowd 
  of 
  others 
  from 
  all 
  sorts 
  of 
  lo- 
  

   calities. 
  The 
  collectors 
  upon 
  whose 
  localities 
  dependence 
  can 
  be 
  placed 
  are 
  

   rare, 
  and 
  mostly 
  of 
  modern 
  date. 
  I 
  have 
  therefore 
  prepared 
  this 
  catalogue 
  as 
  

   a 
  kind 
  of 
  preliminary 
  basis 
  for 
  a 
  better 
  one. 
  The 
  authorities 
  are 
  chiefly 
  as 
  

   follows 
  : 
  Gray 
  and 
  Sowerby 
  in 
  the 
  voyage 
  of 
  the 
  Blossom, 
  Captain 
  F. 
  Beechey; 
  

   'Gould 
  on 
  the 
  shells 
  collected 
  by 
  the 
  late 
  Dr. 
  Wm. 
  Stimpson 
  of 
  the 
  North 
  Pa- 
  

  

  ♦Published 
  in 
  advance, 
  February 
  26th, 
  1874. 
  

  

  