﻿CLASSIFICATION, 
  ETC. 
  OP 
  HAMILTON 
  AND 
  CHEMUNG 
  SERIES 
  167 
  

  

  above 
  the 
  Schoharie 
  river 
  at 
  Middleburg 
  and 
  200 
  feet 
  of 
  the 
  

   section 
  was 
  studied, 
  the 
  upper 
  ledge 
  being 
  a 
  heavy 
  sandstone 
  

   stratum. 
  The 
  dip 
  is 
  heavy, 
  being 
  2J° 
  S 
  85° 
  W 
  in 
  one 
  place 
  that 
  

   was 
  measured 
  and 
  on 
  another 
  ledge 
  2J° 
  S 
  50° 
  W. 
  The 
  lowest 
  

   rocks 
  are 
  not 
  very 
  coarse 
  but 
  rather 
  argillaceous 
  shales 
  in 
  which 
  

   fossils 
  are 
  rare. 
  Then 
  the 
  shales 
  change 
  to 
  a 
  coarser 
  texture, 
  

   are 
  more 
  arenaceous, 
  Splrifer 
  granulosus 
  (Con.) 
  Hall 
  is 
  common 
  

   and 
  a 
  few 
  other 
  species 
  occur. 
  Above 
  is 
  a 
  bluish, 
  blocky 
  sand- 
  

   stone 
  succeeded 
  by 
  arenaceous 
  shales 
  in 
  which 
  Chonetes 
  coronata 
  

   (Con.) 
  Hall 
  is 
  common. 
  And 
  so 
  the 
  slope 
  of 
  the 
  hill 
  is 
  terraced 
  

   by 
  ledges 
  of 
  sandstone 
  and 
  coarse 
  shales 
  which 
  dip 
  quite 
  rapidly 
  

   to 
  the 
  south. 
  In 
  the 
  lower 
  arenaceous 
  shales 
  and 
  blocky 
  sand- 
  

   stones 
  fine 
  specimens 
  of 
  8pirophyton 
  velum 
  (Van.) 
  Hall 
  are 
  com- 
  

   mon. 
  These 
  rocks 
  are 
  all 
  in 
  the 
  Hamilton 
  formation 
  and 
  prob- 
  

   ably 
  in 
  its 
  lower 
  half. 
  

  

  1 
  Spirifer 
  aeuminatus 
  (Con.) 
  Hall 
  (rr) 
  

  

  2 
  8. 
  granulosus 
  (Con.) 
  H. 
  & 
  C. 
  (a) 
  

  

  3 
  8. 
  mucronatus 
  (Con.) 
  Bill. 
  (c) 
  

  

  4 
  8. 
  andaculus 
  (Con.) 
  H. 
  & 
  C. 
  (rr) 
  

  

  5 
  8. 
  tullius 
  Hall 
  (rr) 
  

  

  6 
  Chonetes 
  coronata 
  (Con.) 
  Hall 
  (c) 
  

  

  7 
  C. 
  deflecta 
  Hall 
  (rr) 
  

  

  8 
  C. 
  mucronata 
  Hall 
  (rr) 
  

  

  9 
  Orthothetes 
  chemungensis 
  (Con.) 
  H. 
  & 
  C. 
  

  

  var. 
  arctostriata 
  Hall 
  (rr) 
  

  

  10 
  Athyris 
  spiriferoides 
  (Eaton) 
  Hall 
  (r) 
  

  

  11 
  8tropheodonta 
  perplana 
  (Con.) 
  Hall 
  (rr) 
  

  

  12 
  Camarotoechia 
  congregata 
  (Con.) 
  H. 
  & 
  C. 
  (rr) 
  

  

  13 
  Liorhynchus 
  multicosta 
  Hall 
  (rr) 
  

  

  14 
  Paracyclas 
  lirata 
  (Con.) 
  Hall 
  (rj 
  

  

  15 
  Goniophora 
  rugosa 
  (Con.) 
  Miller 
  (rr) 
  

  

  16 
  Modiomorpha 
  concentrica 
  (Con.) 
  Hall 
  (rr) 
  

  

  17 
  Glyptodesma 
  erectum 
  (Con.) 
  Hall 
  (rr) 
  

  

  18 
  Spirophyton 
  velum 
  (Van.) 
  Hall 
  (r) 
  

   XXXVII 
  D. 
  A 
  section 
  was 
  examined 
  in 
  the 
  southern 
  part 
  of 
  

  

  Middleburg 
  and 
  across 
  into 
  the 
  northwestern 
  part 
  of 
  Broome 
  town- 
  

   ship, 
  from 
  two 
  and 
  one 
  half 
  to 
  three 
  miles 
  south 
  of 
  the 
  village 
  of 
  

   Middleburg 
  and 
  on 
  the 
  eastern 
  side 
  of 
  Moheganter 
  hill. 
  The 
  

   first 
  rocks 
  studied 
  are 
  those 
  of 
  a 
  small 
  stone 
  quarry 
  (D 
  2 
  ) 
  in 
  the 
  

  

  