﻿662 
  Forty-seventh 
  Report 
  on 
  the 
  State 
  Museum. 
  

  

  Series 
  IV. 
  The 
  palaeozoic 
  sediments 
  do 
  not 
  appear 
  in 
  Lewis. 
  

  

  Series 
  V. 
  One 
  small 
  trap 
  dike 
  was 
  met 
  in 
  the 
  bed 
  of 
  a 
  little 
  

   brook 
  at 
  No. 
  15, 
  near 
  the 
  southern 
  boundary. 
  

  

  Series 
  VI. 
  Pleistocene 
  sands 
  are 
  very 
  widely 
  spread 
  through- 
  

   out 
  the 
  town. 
  Its 
  central 
  part 
  is 
  abroad 
  valley, 
  and 
  this 
  is 
  buried 
  

   under 
  these 
  later 
  deposits 
  throughout 
  much 
  of 
  its 
  extent, 
  more 
  so 
  

   than 
  the 
  map 
  indicates. 
  These 
  serve 
  to 
  hide 
  the 
  rocks, 
  and 
  it 
  is 
  

   quite 
  possible 
  that 
  a 
  wider 
  area 
  than 
  is 
  so 
  colored 
  on 
  the 
  map 
  

   is 
  formed 
  of 
  the 
  Series 
  II 
  and 
  I. 
  

  

  Mines. 
  — 
  We 
  learned 
  of 
  no 
  mines 
  in 
  Lewis. 
  The 
  forge 
  formerly 
  

   located 
  in 
  the 
  town 
  was 
  supplied 
  from 
  neighboring 
  townships. 
  

   It 
  would 
  be 
  strange, 
  however, 
  if 
  there 
  were 
  not 
  some 
  deposits 
  of 
  

   titaniferous 
  ores. 
  

  

  Keene. 
  

  

  Series 
  1. 
  No 
  undoubted 
  gneisses 
  appear 
  in 
  Keene. 
  In 
  the 
  

   northern 
  part 
  gneissoid 
  rocks 
  are 
  abundant, 
  and 
  in 
  the 
  field 
  they 
  

   were 
  regarded 
  as 
  members 
  of 
  this 
  series, 
  but 
  under 
  the 
  micro- 
  

   scope 
  they 
  are 
  basic 
  aggregates 
  of 
  hornblende 
  and 
  plagioclase, 
  

   and 
  contain 
  no 
  orthoclase. 
  They, 
  therefore, 
  were 
  esteemed 
  

   gneissoid 
  anorthosite. 
  A 
  red 
  feldspathic 
  granite 
  does 
  appear 
  at 
  

   the 
  falls 
  just 
  above 
  Keene 
  Center 
  (Keene 
  of 
  map), 
  and 
  is 
  of 
  

   uncertain 
  relations. 
  It 
  was 
  only 
  seen 
  at 
  one 
  other 
  locality 
  so 
  far 
  

   as 
  our 
  work 
  has 
  gone, 
  and 
  this 
  was 
  at 
  the 
  large 
  falls 
  and 
  flume 
  

   in 
  Wilmington 
  notch, 
  where, 
  as 
  in 
  Keene, 
  it 
  is 
  associated 
  with 
  a 
  

   basic 
  dike. 
  

  

  Series 
  II. 
  The 
  crystalline 
  limestones, 
  etc., 
  have 
  two 
  excellent, 
  

   small 
  exposures 
  and 
  apparently 
  a 
  third 
  which 
  is 
  not 
  well 
  under- 
  

   stood. 
  The 
  one 
  southwest 
  of 
  Keene 
  Center 
  covers 
  a 
  square 
  mile 
  

   or 
  more, 
  on 
  the 
  slopes 
  of 
  the 
  western 
  ridge. 
  It 
  consists 
  of 
  

   ophicalcite 
  in 
  the 
  main, 
  with 
  large 
  bodies 
  of 
  magnetite, 
  and 
  

   apparently 
  at 
  the 
  Weston 
  (or 
  Wood) 
  mine 
  with 
  granulite 
  (German 
  

   granulite) 
  abundantly 
  interbedded. 
  It 
  is 
  the 
  only 
  case 
  in 
  the 
  

   whole 
  region 
  of 
  the 
  Adirondacks, 
  known 
  to 
  the 
  writer, 
  where 
  

   there 
  are 
  magnetites 
  in 
  limestone. 
  Section 
  BB 
  of 
  the 
  map 
  is 
  an 
  

   endeavor 
  to 
  reproduce 
  the 
  rocks 
  as 
  seen 
  in 
  the 
  brook 
  right 
  near 
  

   the 
  Weston 
  mine. 
  The 
  limestone 
  is 
  thoroughly 
  crystalline 
  and 
  

   heavily 
  charged 
  with 
  blackish 
  green 
  pyroxene, 
  which 
  has 
  yielded 
  

   the 
  serpentinous 
  mottlings 
  where 
  weathered. 
  It 
  also 
  -contains 
  

   rude 
  garnets, 
  at 
  times 
  of 
  large 
  size. 
  Some 
  of 
  these 
  are 
  half 
  or 
  

  

  