﻿ACADEMY 
  OF 
  SCIENCES. 
  281 
  

  

  Among 
  other 
  specimens 
  of 
  the 
  young 
  form, 
  one 
  was 
  obtained 
  at 
  Arachitka, 
  

   with 
  a 
  curious 
  malformation 
  of 
  the 
  lower 
  mandible, 
  which 
  was 
  nearly 
  one-half 
  

   shorter 
  than 
  the 
  upper 
  one. 
  The 
  bird, 
  however, 
  was 
  healthy 
  and 
  fat. 
  

  

  In 
  closing 
  this 
  list, 
  which 
  I 
  believe 
  to 
  be 
  very 
  nearly 
  a 
  complete 
  one 
  of 
  the 
  

   birds 
  west 
  of 
  Unalashka, 
  I 
  have 
  to 
  thank 
  Messrs. 
  Frost 
  and 
  McCarty, 
  of 
  the 
  

   A. 
  C. 
  Co., 
  agents 
  at 
  Attu 
  and 
  Atka, 
  respectively 
  ; 
  and 
  Captain 
  E. 
  P. 
  Heren- 
  

   deen, 
  and 
  other 
  meiiibers 
  of 
  my 
  party, 
  who 
  made 
  the 
  most 
  of 
  the 
  scanty 
  leisure 
  

   afforded 
  by 
  our 
  summer's 
  surveying 
  work, 
  in 
  assisting 
  to 
  make 
  the 
  collection 
  as 
  

   complete 
  as 
  possible. 
  

  

  Mr. 
  Stearns 
  read 
  a 
  translation 
  from 
  the 
  reports 
  of 
  the 
  Society 
  

   for 
  the 
  Preservation 
  of 
  Norwegian 
  Antiquities 
  ; 
  describing 
  the 
  ex- 
  

   cavation 
  of 
  an 
  ancient 
  vessel, 
  of 
  the 
  Viking 
  period, 
  found 
  in 
  the 
  

   parish 
  of 
  Tane, 
  Norway. 
  

  

  Judge 
  Hastings 
  read 
  a 
  paper 
  on 
  the 
  " 
  creeping 
  " 
  of 
  railroad 
  

   tracks. 
  

  

  The 
  President 
  made 
  the 
  following 
  remarks 
  in 
  addition 
  to 
  the 
  

   paper 
  on 
  deep 
  sea 
  soundings, 
  read 
  in 
  the 
  last 
  meeting 
  : 
  

  

  In 
  the 
  communication 
  made 
  at 
  the 
  last 
  meeting 
  upon 
  the 
  subject 
  of 
  the 
  deep 
  

   sea-bottom 
  of 
  the 
  Pacific, 
  I 
  omitted 
  to 
  mention 
  the 
  fact 
  that 
  the 
  average 
  depth 
  

   of 
  this 
  ocean, 
  on 
  a 
  direct 
  line 
  between 
  Japan 
  and 
  California, 
  had 
  been 
  deter- 
  

   mined 
  in 
  1855, 
  by 
  Professor 
  Bache, 
  of 
  the 
  Coast 
  Survey, 
  from 
  the 
  discussion 
  

   of 
  the 
  observations 
  of 
  the 
  transmission 
  of 
  the 
  great 
  earthquake 
  waves 
  of 
  De- 
  

   cember, 
  1854. 
  The 
  matter 
  is 
  not 
  new, 
  but 
  is 
  worth 
  repeating 
  in 
  connection 
  

   with 
  the 
  present 
  subject. 
  

  

  The 
  character 
  of 
  these 
  waves 
  being 
  ascertained, 
  and 
  also 
  the 
  time 
  of 
  their 
  

   transmission, 
  the 
  average 
  depth 
  of 
  the 
  ocean 
  in 
  their 
  path 
  can 
  be 
  determined. 
  

   The 
  rate 
  of 
  motion 
  of 
  the 
  crest 
  of 
  the 
  wave 
  from 
  Simoda 
  to 
  San 
  Diego, 
  waa 
  

   370 
  miles 
  per 
  hour, 
  or 
  G.2 
  miles 
  per 
  minute 
  ; 
  to 
  San 
  Francisco, 
  355 
  miles 
  per 
  

   hour, 
  or 
  6 
  miles 
  per 
  minute. 
  The 
  duration 
  of 
  an 
  oscillation 
  on 
  the 
  San 
  Diego 
  

   path 
  was 
  31 
  minutes 
  ; 
  the 
  duration 
  of 
  an 
  oscillation 
  on 
  the 
  San 
  Francisco 
  

   path 
  35 
  minutes. 
  

  

  These 
  data 
  yield, 
  for 
  the 
  length 
  of 
  the 
  wave 
  on 
  the 
  San 
  Diego 
  path, 
  186 
  to 
  

   192 
  miles, 
  and 
  on 
  the 
  San 
  Francisco 
  path, 
  210 
  to 
  217 
  miles. 
  

  

  Now, 
  a 
  wave 
  of 
  210 
  miles 
  in 
  length 
  would 
  move 
  in 
  a 
  velocity 
  of 
  6.0 
  miles 
  in 
  

   a 
  depth 
  of 
  2230 
  fathoms, 
  and 
  a 
  wave 
  of 
  217 
  miles 
  in 
  length 
  would 
  move 
  with 
  

   a 
  velocity 
  of 
  6.2 
  miles 
  per 
  minute, 
  in 
  a 
  depth 
  of 
  2500 
  fathoms. 
  

  

  In 
  a 
  similar 
  manner 
  was 
  derived 
  the 
  average 
  depth 
  of 
  2100 
  fathoms 
  on 
  the 
  

   San 
  Diego 
  path. 
  

  

  