﻿24Q 
  Scientific 
  Intelligence. 
  

  

  from 
  one 
  sixty-fourth 
  to 
  one-eighth 
  of 
  an 
  inch 
  ; 
  some 
  are 
  full 
  a 
  

   fourth 
  of 
  an 
  inch, 
  but 
  the 
  average 
  is 
  about 
  a 
  thirty-second 
  of 
  an 
  

   inch." 
  " 
  The 
  tubules 
  grow 
  more 
  densely 
  clustered 
  as 
  we 
  pass 
  

   inward, 
  and 
  finally, 
  as 
  it 
  were, 
  thicken 
  into 
  a 
  white 
  solid 
  compact 
  

   wall 
  " 
  which 
  in 
  some 
  cases 
  is 
  nearly 
  an 
  inch 
  thick. 
  The 
  conclu- 
  

   sion 
  is 
  thence 
  reached 
  that 
  the 
  coiled 
  fossils 
  were 
  some 
  kind 
  of 
  

   plant. 
  

  

  Prof. 
  J. 
  A. 
  Allen, 
  of 
  the 
  American 
  Museum 
  of 
  Natural 
  History, 
  

   judging 
  from 
  the 
  descriptions 
  in 
  the 
  paper 
  of 
  1892, 
  expressed 
  the 
  

   opinion 
  in 
  the 
  letter 
  to 
  the 
  writer, 
  that 
  they 
  were 
  probably 
  the 
  

   burrows 
  of 
  a 
  Rodent, 
  one 
  or 
  more 
  species 
  of 
  Rodent 
  having 
  been 
  

   described 
  from 
  the 
  Miocene 
  beds. 
  

  

  Prof. 
  W. 
  G. 
  Farlow 
  of 
  Cambridge, 
  in 
  view 
  of 
  the 
  later 
  as 
  well 
  

   as 
  earlier 
  described 
  facts, 
  writes 
  rejecting 
  the 
  idea 
  as 
  to 
  their 
  being 
  

   Algae 
  or 
  of 
  any 
  other 
  order 
  of 
  Cryptogams, 
  and 
  says, 
  in 
  conclu- 
  

   sion 
  that 
  " 
  on 
  the 
  whole, 
  in 
  spite 
  of 
  the 
  failure 
  of 
  the 
  microscopic 
  

   sections 
  to 
  show 
  the 
  characteristic 
  structure 
  of 
  roots, 
  I 
  cannot 
  

   help 
  believing 
  that 
  the 
  coils 
  were 
  really 
  hollows 
  into 
  which 
  some- 
  

   thing 
  like 
  roots 
  have 
  grown 
  and 
  been 
  fossilized. 
  It 
  would 
  be 
  of 
  

   great 
  interest 
  to 
  have 
  a 
  microscopic 
  examination 
  of 
  the 
  matrix 
  

   in 
  which 
  the 
  coils 
  are 
  imbedded 
  ; 
  for 
  it 
  might 
  afford 
  a 
  clew 
  as 
  to 
  

   the 
  possible 
  nature 
  of 
  the 
  filaments 
  of 
  which 
  the 
  coils 
  are 
  mainly 
  

   composed." 
  

  

  This 
  conclusion 
  of 
  Prof. 
  Farlow 
  is 
  consistent 
  with 
  that 
  of 
  Prof. 
  

   Allen, 
  that 
  they 
  are 
  probably 
  the 
  burrows 
  of 
  Rodents, 
  and 
  that 
  

   the 
  winding 
  form 
  of 
  the 
  burrow 
  was 
  adopted, 
  as 
  the 
  latter 
  sug- 
  

   gested, 
  to 
  facilitate 
  ascent 
  and 
  descent. 
  j. 
  d. 
  d. 
  

  

  3. 
  Report 
  of 
  the 
  geological 
  survey 
  of 
  Ohio, 
  Vol. 
  VII., 
  Economic 
  

   Geology, 
  Archmology, 
  Botany, 
  Paleontology, 
  pp. 
  i-xvi, 
  i-290, 
  

   i-700, 
  Plates 
  I-LVI. 
  A 
  colored 
  geological 
  map 
  of 
  the 
  state, 
  10 
  

   folio 
  maps 
  illustrating 
  the 
  coal 
  fields, 
  several 
  woodcuts 
  in 
  the 
  

   body 
  of 
  text 
  and 
  11 
  charts 
  and 
  maps 
  illustrating 
  Archaeology. 
  

   1893. 
  — 
  The 
  volume 
  is 
  divided 
  into 
  two 
  parts: 
  Part 
  I 
  — 
  Economic 
  

   — 
  contains 
  chapters 
  on 
  the 
  geological 
  scale 
  and 
  geological 
  struc- 
  

   ture 
  of 
  Ohio, 
  the 
  clays 
  of 
  Ohio, 
  their 
  origin, 
  composition 
  and 
  

   varieties, 
  and 
  the 
  coal 
  fields 
  of 
  Ohio, 
  by 
  Prof. 
  Edward 
  Orton, 
  

   and 
  one 
  on 
  The 
  clay 
  working 
  industries 
  of 
  Ohio, 
  by 
  Edward 
  

   Orton, 
  Jr. 
  In 
  the 
  first 
  chapter 
  the 
  state 
  geologist 
  calls 
  atten- 
  

   tion 
  to 
  the 
  importance 
  of 
  retaining 
  the 
  original 
  boundaries 
  of 
  the 
  

   Waverly 
  group, 
  the 
  lowest 
  member 
  of 
  which 
  is 
  the 
  Bedford 
  shale 
  

   of 
  Newberry 
  ot 
  the 
  northern 
  part 
  of 
  the 
  state, 
  the 
  name 
  Waverly 
  

   shale 
  having 
  been 
  applied 
  to 
  the 
  extension 
  of 
  the 
  same 
  formation 
  

   in 
  the 
  southern 
  part 
  of 
  the 
  state. 
  The 
  Ohio 
  shale, 
  including 
  the 
  

   Huron, 
  Erie 
  and 
  Cleveland 
  shales 
  of 
  Newbury 
  " 
  fills 
  the 
  entire 
  

   interval 
  between 
  the 
  Hamilton 
  proper 
  and 
  the 
  Catskill 
  group, 
  

   and 
  in 
  the 
  judgment 
  of 
  some 
  geologists 
  a 
  wider 
  interval 
  even 
  

   than 
  that 
  named 
  above." 
  

  

  Part 
  II 
  contains 
  the 
  following 
  chapters 
  : 
  Chapter 
  I, 
  The 
  Archae- 
  

   ology 
  of 
  Ohio, 
  an 
  abstract 
  embodying 
  the 
  principal 
  results 
  of 
  

   explorations 
  and 
  discoveries 
  thus 
  far 
  made, 
  designed 
  for 
  those 
  to 
  

  

  