﻿THE 
  

  

  AMERICAN 
  JOURNALOFSCIENCE 
  

  

  [FOURTH 
  SERIES.] 
  

  

  Art. 
  XXXI. 
  — 
  The 
  Geology 
  of 
  the 
  Lau 
  Islands 
  ; 
  by 
  Wilbur 
  

  

  Garland 
  Foye. 
  

  

  Outline. 
  

  

  Introduction 
  

  

  Geography 
  

   Previous 
  work 
  

   General 
  statement 
  of 
  results 
  

   Classification 
  of 
  the 
  islands 
  

   Detailed 
  geology 
  

  

  1 
  — 
  Vanua 
  Mbalavu 
  

  

  2 
  — 
  Lakemba 
  

   Application 
  of 
  the 
  results 
  of 
  the 
  expedition 
  

  

  to 
  coral 
  reef 
  theories. 
  

  

  Introduction. 
  

  

  The 
  following 
  paper 
  presents 
  in 
  outline 
  a 
  few 
  of 
  the 
  more 
  

   important 
  results 
  obtained 
  during 
  a 
  geological 
  study 
  of 
  the 
  

   Lan 
  Islands, 
  Fiji. 
  The 
  study 
  was 
  made 
  while 
  a 
  Sheldon 
  

   Traveling 
  Fellow 
  of 
  Harvard 
  University 
  and 
  occupied 
  the 
  

   months 
  between 
  August 
  and 
  November, 
  1915. 
  A 
  complete 
  

   account 
  of 
  the 
  expedition 
  will 
  be 
  published 
  later 
  as 
  a 
  Shaler 
  

   Memorial 
  report. 
  

  

  Geography 
  . 
  

  

  The 
  Lau 
  group 
  consists 
  of 
  fifty 
  or 
  more 
  islands 
  lying 
  east 
  of 
  

   the 
  two 
  main 
  islands 
  of 
  Fiji. 
  They 
  are 
  scattered 
  over 
  300 
  

   miles 
  of 
  the 
  ocean 
  fioor 
  from 
  the 
  17th 
  to 
  the 
  21st 
  parallels 
  of 
  

   south 
  latitude 
  and 
  between 
  the 
  178th 
  and 
  179th 
  meridians 
  of 
  

   west 
  longitude. 
  The 
  average 
  island 
  is, 
  perhaps, 
  4 
  or 
  5 
  miles 
  in 
  

   diameter 
  and 
  300 
  or 
  400 
  feet 
  in 
  height. 
  Vanua 
  Mbalavu, 
  

   lying 
  at 
  the 
  west 
  side 
  of 
  the 
  lagoon 
  inclosing 
  the 
  Exploring 
  

   group, 
  is 
  one 
  of 
  the 
  largest 
  islands. 
  It 
  is 
  20 
  miles 
  long 
  and 
  

   1 
  or 
  2 
  miles 
  wide. 
  

  

  Am. 
  Jour. 
  Sci.— 
  Fourth 
  Series, 
  Vol. 
  XLIII, 
  No. 
  257.— 
  May, 
  1917. 
  

   24 
  

  

  