﻿512 
  Transactions. 
  — 
  Geology. 
  

  

  the 
  Lyttelton 
  end, 
  the 
  lava-streams, 
  ■when 
  first 
  passed 
  through, 
  were 
  so 
  wet 
  

   that 
  the 
  workmen 
  could 
  scarcely 
  continue 
  the 
  work. 
  In 
  these 
  streams 
  all 
  

   the 
  cellular 
  cavities 
  were 
  either 
  lined 
  with 
  sphserosiderite 
  or 
  filled 
  with 
  calcite. 
  

   Sixteen 
  chains 
  from 
  the 
  Lyttelton 
  entrance, 
  in 
  the 
  agglomerate 
  bed 
  No. 
  

   228, 
  and 
  from 
  a 
  fissure 
  reaching 
  from 
  the 
  roof 
  of 
  the 
  tunnel, 
  a 
  copious 
  

   spring 
  flows 
  which 
  has 
  a 
  constant 
  temperature 
  of 
  65" 
  20 
  degrees 
  Fahrenheit, 
  

   consequently 
  12-20 
  degrees 
  above 
  the 
  mean 
  temperature 
  of 
  Christchurch 
  — 
  

   about 
  53 
  degrees. 
  Several 
  eels 
  have 
  been 
  caught 
  near 
  this 
  spring 
  in 
  the 
  

   drain 
  which 
  runs 
  from 
  here 
  to 
  the 
  mouth 
  of 
  the 
  tunnel. 
  There 
  being 
  no 
  

   connection 
  with 
  any 
  other 
  watercourse, 
  these 
  eels 
  must 
  have 
  ascended 
  by 
  

   the 
  spring; 
  they 
  belong 
  to 
  the 
  species 
  Anrjuilla 
  aucldancUi, 
  Eich., 
  and 
  have 
  

   properly 
  developed 
  eyes. 
  During 
  the 
  construction 
  of 
  the 
  tunnel 
  it 
  was 
  

   frequently 
  observed 
  in 
  the 
  north, 
  or 
  Heathcote 
  end, 
  that 
  the 
  water 
  rose 
  in 
  

   the 
  floor 
  before 
  a 
  south-west 
  gale, 
  and 
  subsided 
  before 
  the 
  gale 
  lulled 
  ; 
  no 
  

   observations 
  could 
  be 
  made 
  to 
  ascertain 
  whether 
  the 
  state 
  of 
  the 
  tide 
  had 
  

   anything 
  to 
  do 
  with 
  this. 
  The 
  height 
  to 
  which 
  the 
  water 
  rose 
  was 
  some- 
  

   what 
  under 
  half 
  an 
  inch. 
  After 
  the 
  earthquake 
  of 
  August 
  17, 
  1868, 
  this 
  

   spring 
  in 
  the 
  tunnel 
  increased 
  to 
  such 
  an 
  extent 
  that 
  it 
  laid 
  the 
  rails 
  slightly 
  

   under 
  water 
  ; 
  after 
  a 
  few 
  days 
  it 
  decreased 
  again 
  to 
  its 
  former 
  volume. 
  

  

  Art, 
  LXXXV. 
  — 
  Notes 
  on 
  a 
  Salt 
  Spring 
  near 
  Hokianga. 
  By 
  J. 
  A. 
  Pond. 
  

  

  [Read 
  before 
  the 
  Auckland 
  Institute, 
  9th 
  September, 
  1878.] 
  

   In 
  looking 
  over 
  the 
  Transactions 
  of 
  the 
  New 
  Zealand 
  Institute, 
  just 
  to 
  

   hand, 
  I 
  read 
  with 
  pleasure 
  the 
  paper 
  by 
  W. 
  Skey, 
  on 
  the 
  Mineral 
  Waters 
  of 
  

   New 
  Zealand, 
  in 
  which 
  he 
  gives 
  the 
  analyses 
  and 
  description 
  of 
  waters 
  from 
  

   all 
  known 
  springs 
  in 
  the 
  Colony. 
  As 
  we 
  might 
  expect, 
  the 
  North 
  Island, 
  

   and 
  particularly 
  this 
  district, 
  has 
  supplied 
  the 
  large 
  majority 
  of 
  samples 
  ; 
  

   but 
  though 
  much 
  has 
  been 
  done 
  in 
  this 
  respect 
  there 
  are 
  very 
  many 
  springs 
  

   containing 
  mineral 
  salts, 
  and 
  having 
  medicinal 
  properties, 
  which 
  still 
  remain 
  

   unexamined, 
  and 
  leave 
  a 
  rich 
  field 
  for 
  those 
  having 
  the 
  will 
  and 
  capacity 
  to 
  

   bring 
  them 
  to 
  light, 
  or 
  rather 
  to 
  the 
  Transactions. 
  

  

  Some 
  mouths 
  ago, 
  Judge 
  Monro 
  first 
  mentioned 
  the 
  existence 
  of 
  a 
  salt 
  

   spring 
  to 
  me, 
  and 
  on 
  a 
  later 
  occasion 
  kindly 
  placed 
  a 
  few 
  ounces 
  of 
  the 
  

   water 
  at 
  my 
  disposal, 
  too 
  small 
  an 
  amount 
  to 
  make 
  a 
  complete 
  analysis 
  of, 
  

   but 
  as 
  its 
  especial 
  characteristic 
  was 
  its 
  saline 
  nature, 
  I 
  have 
  made 
  a 
  partial 
  

   quantitative 
  analysis, 
  which 
  I 
  give 
  belov,-. 
  

  

  