﻿476 
  F. 
  A. 
  Perret 
  — 
  Volcanic 
  Research 
  at 
  Kilauea. 
  

  

  which 
  have 
  been 
  briefly 
  considered 
  in 
  the 
  preceding 
  papers 
  of 
  

   the 
  series. 
  

  

  The 
  project 
  may, 
  therefore, 
  be 
  said 
  to 
  have 
  been 
  founded 
  

   by 
  the 
  Institute 
  of 
  Technology 
  and 
  the 
  people 
  of 
  Hawaii 
  

   through 
  the 
  initiative 
  of 
  Prof. 
  Jaggar 
  ; 
  with 
  the 
  cooperation 
  

   of 
  the 
  Carnegie 
  Laboratory, 
  as 
  represented 
  by 
  Dr. 
  Shepherd 
  ; 
  

   and 
  carried 
  into 
  effect 
  by 
  the 
  Yolcanic 
  Research 
  Society, 
  in 
  

   the 
  person 
  of 
  the 
  present 
  writer. 
  

  

  It 
  is 
  but 
  fair 
  to 
  state 
  that 
  the 
  financial 
  means 
  of 
  the 
  expedi- 
  

   tion 
  were 
  extremely 
  limited 
  and 
  that, 
  had 
  it 
  not 
  been 
  for 
  the 
  

   hearty 
  disposition 
  of 
  the 
  residents, 
  one 
  and 
  all, 
  to 
  aid 
  and 
  

   facilitate 
  the 
  work 
  by 
  every 
  means 
  in 
  their 
  power, 
  the 
  results 
  

   would 
  have 
  been 
  very 
  different. 
  Noted 
  for 
  hospitality 
  and 
  

   good 
  will, 
  their 
  attitude 
  toward 
  the 
  workers 
  was 
  beyond 
  all 
  

  

  Fig. 
  1. 
  

  

  praise 
  and 
  the 
  writer 
  takes 
  this 
  opportunity 
  of 
  expressing 
  his 
  

   grateful 
  appreciation 
  of 
  all 
  that 
  was 
  done. 
  

  

  A 
  difficulty, 
  graver 
  than 
  the 
  financial 
  one, 
  lay 
  in 
  the 
  changed 
  

   volcanic 
  conditions 
  at 
  this 
  time 
  as 
  compared 
  with 
  Prof. 
  

   Jaggar's 
  visit 
  in 
  1909. 
  Then, 
  a 
  complete 
  "black 
  ledge" 
  

   stood 
  within 
  the 
  walls 
  of 
  Halemaumau 
  forming 
  an 
  accessible 
  

   platform 
  at 
  no- 
  great 
  distance 
  from 
  the 
  lake 
  of 
  lava 
  over 
  which 
  

   it 
  was 
  proposed 
  to 
  stretch 
  the 
  cables, 
  but, 
  by 
  1911, 
  this 
  was, 
  for 
  

   all 
  practical 
  purposes, 
  non-existent, 
  the 
  few 
  remaining 
  sectors 
  

   being 
  quite 
  unsuitable 
  for 
  supports 
  and 
  anchorages, 
  as 
  will 
  

   have 
  been 
  evident 
  from 
  a 
  perusal 
  of 
  the 
  paper 
  on 
  " 
  Subsidence 
  

   Phenomena."* 
  It 
  became 
  necessary, 
  therefore, 
  to 
  work 
  from 
  

   the 
  top 
  of 
  Halemaumau, 
  and 
  this 
  increased 
  the 
  magnitude 
  and 
  

   the 
  difficulty 
  of 
  the 
  operations 
  beyond 
  all 
  anticipation. 
  

  

  From 
  figs. 
  1 
  and 
  2 
  the 
  reader 
  will 
  obtain 
  some 
  idea 
  of 
  the 
  

  

  apparatus 
  erected 
  for 
  the 
  purpose 
  of 
  obtaining 
  temperature 
  

  

  measurements 
  of 
  the 
  lake 
  lava 
  and 
  for 
  collecting 
  the 
  material, 
  

  

  itself, 
  directly 
  from 
  the 
  lava 
  fountains. 
  In 
  the 
  outline 
  sketch 
  

  

  * 
  This 
  Journal, 
  May, 
  1913. 
  

  

  