﻿620 
  . 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  line 
  of 
  the 
  highways 
  connecting 
  Syosset 
  with 
  towns 
  on 
  the 
  northern 
  

   side 
  of 
  the 
  ridge. 
  

  

  The 
  northern 
  plains 
  varying 
  from 
  190 
  to 
  220 
  feet 
  in 
  elevation 
  are 
  

   well 
  developed 
  about 
  East 
  Norwich. 
  Their 
  surface 
  is 
  roughened 
  

   and 
  is 
  usually 
  more 
  uneven 
  than 
  the 
  20 
  foot 
  contours 
  of 
  the 
  accom- 
  

   panying 
  map 
  can 
  be 
  made 
  to 
  indicate. 
  These 
  upper 
  plains 
  frequently 
  

   overlook 
  like 
  a 
  terrace 
  lower 
  levels 
  of 
  much 
  more 
  uneven 
  surface 
  

   near 
  the 
  100 
  foot 
  level, 
  as 
  between 
  Manhasset 
  hill 
  and 
  Flower 
  hill, 
  

   between 
  Greenville 
  station 
  and 
  Glen 
  wood 
  landing, 
  and 
  on 
  the 
  borders 
  

   of 
  Mill 
  ]^eck 
  creek. 
  The 
  terraciform 
  slopes 
  are 
  like 
  the 
  sides 
  of 
  

   those 
  valleys 
  which 
  dissect 
  the 
  rude 
  plains, 
  usually 
  irregular, 
  roughly 
  

   lobate 
  or 
  cuspate, 
  and 
  sloping 
  without 
  sharp 
  demarcation 
  into 
  the 
  

   lower 
  grounds 
  which 
  they 
  overlook. 
  The 
  northern 
  margin 
  of 
  these 
  

   dissected 
  plains 
  often 
  reveals 
  them 
  as 
  mere 
  narrow 
  ridges 
  with 
  

   rounded 
  summits, 
  and 
  with 
  small 
  bays 
  or 
  marshes 
  on 
  either 
  side, 
  as 
  

   at 
  Mill 
  'Neck. 
  

  

  The 
  broad 
  southern 
  plain 
  needs 
  little 
  more 
  description 
  beyond 
  

   that 
  already 
  given 
  than 
  to 
  note 
  a 
  low 
  ridge, 
  about 
  20 
  feet 
  in 
  eleva- 
  

   tion 
  and 
  from 
  a 
  mile 
  to 
  2 
  miles 
  wide, 
  springing 
  out 
  from 
  the 
  

   plain 
  near 
  Lynbrook, 
  and 
  extending 
  southwestward 
  parallel 
  to 
  the 
  

   main 
  ridge 
  farther 
  north, 
  till 
  it 
  is 
  cut 
  off 
  by 
  the 
  sea 
  at 
  Far 
  Rocka- 
  

   way. 
  Associated 
  with 
  this 
  ridge 
  is 
  the 
  semicircular 
  depression 
  on 
  

   the 
  west 
  known 
  as 
  Jamaica 
  bay, 
  largely 
  marsh-filled, 
  and 
  an 
  exten- 
  

   sion 
  of 
  this 
  feature 
  in 
  the 
  region 
  of 
  Broad 
  channel. 
  Along 
  both 
  

   north 
  a^d 
  south 
  shores 
  are 
  bars 
  and 
  beaches, 
  with 
  cliffs, 
  produced 
  by 
  

   the 
  recent 
  work 
  of 
  the 
  sea. 
  

  

  A 
  summarized 
  view 
  of 
  the 
  island 
  in 
  this 
  region 
  would 
  be 
  fairly 
  

   represented 
  in 
  a 
  cross-section, 
  such 
  as 
  that 
  shown 
  in 
  fig. 
  1, 
  in 
  which 
  

   the 
  northern, 
  rude, 
  terraced 
  plains 
  rising 
  rather 
  abruptly 
  above 
  the 
  

   sound 
  are 
  succeeded 
  Oti 
  the 
  south 
  by 
  the 
  main 
  ridge 
  and 
  the 
  out- 
  

   lying 
  knobs, 
  from 
  which 
  there 
  stretches 
  a 
  broad 
  plain 
  sloping 
  south- 
  

   ward 
  to 
  the 
  sea 
  or 
  confronted 
  near 
  Far 
  Rockaway 
  by 
  a 
  low 
  ridge, 
  

   beyond 
  which 
  in 
  turn 
  lie 
  the 
  south 
  beaches. 
  

  

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  D^t«n(« 
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  Fig. 
  1 
  Diagrammatic 
  cross-section 
  of 
  Long 
  Island 
  near 
  the 
  boundary 
  line 
  of 
  Queens 
  and 
  Nas- 
  

   sau 
  counties 
  

  

  