﻿James 
  Dwight 
  Dana. 
  341 
  

  

  ticut 
  and 
  Massachusetts, 
  and 
  extending 
  westward 
  into 
  New 
  

   York 
  and 
  north 
  to 
  Yermont, 
  was 
  tramped 
  and 
  driven 
  over 
  

   many 
  times, 
  until 
  one 
  might 
  almost 
  say 
  that 
  there 
  was 
  hardly 
  

   an 
  outcrop 
  accessible 
  to 
  any 
  of 
  the 
  roads 
  in 
  this 
  difficult 
  region 
  

   that 
  had 
  not 
  been 
  visited, 
  its 
  rocks 
  examined 
  and 
  observations 
  

   recorded 
  on 
  the 
  dip 
  and 
  strike. 
  These 
  results 
  and 
  the 
  con- 
  

   clusions 
  derived 
  from 
  them 
  fill 
  many 
  pages 
  of 
  this 
  Journal.. 
  

   Against 
  the 
  dictum 
  that 
  all 
  crystalline 
  rocks, 
  not 
  volcanic, 
  

   must 
  be 
  of 
  pre-Paleozoic 
  age, 
  he 
  rebelled 
  strongly 
  as 
  against 
  

   all 
  similar 
  dogmatic 
  treatment. 
  of 
  scientific 
  facts 
  and 
  principles. 
  

   His 
  strength 
  of 
  feeling 
  on 
  this 
  point 
  was 
  what 
  largely 
  prompted 
  

   him 
  to 
  spend 
  so 
  much 
  time 
  and 
  strength 
  in 
  this 
  investigation. 
  

   He 
  was 
  no 
  less 
  interested 
  in 
  the 
  country 
  immediately 
  about 
  

   New 
  Haven, 
  especially 
  as 
  regards 
  its 
  glacial 
  phenomena. 
  In 
  

   1870, 
  he 
  published 
  a 
  large 
  memoir 
  on 
  the 
  Geology 
  of 
  the 
  

   New 
  Haven 
  region. 
  The 
  observations, 
  recorded 
  in 
  this 
  paper, 
  

   were 
  made 
  at 
  a 
  time 
  when 
  work 
  at 
  his 
  table 
  was 
  impossible 
  

   and 
  the 
  open-air 
  exercise 
  brought 
  profit 
  to 
  health 
  as 
  well 
  as 
  

   scientific 
  results. 
  Twenty 
  years 
  later, 
  when 
  again 
  incapacitated 
  

   from 
  writing 
  and 
  close 
  thinking, 
  he 
  issued 
  a 
  small 
  volume 
  enti- 
  

   tled 
  " 
  The 
  Four 
  Rocks 
  of 
  the 
  New 
  Haven 
  region 
  " 
  describing 
  

   some 
  of 
  the 
  chief 
  features 
  of 
  the 
  region 
  in 
  popular 
  form. 
  

  

  Thus 
  far 
  only 
  his 
  labors 
  in 
  Mineralogy 
  and 
  Geology 
  have 
  

   been 
  spoken 
  of 
  in 
  particular, 
  and 
  probably 
  most 
  of 
  the 
  younger 
  

   generation 
  of 
  workers 
  in 
  science 
  know 
  him 
  only 
  in 
  these 
  fields. 
  

   But 
  his 
  most 
  extensive 
  original 
  contributions 
  to 
  science 
  were 
  

   in 
  the 
  department 
  of 
  Zoology, 
  to 
  which 
  he 
  made 
  early 
  contribu- 
  

   tions 
  although 
  chiefly 
  attracted 
  to 
  it 
  by 
  the 
  chance 
  opening 
  

   when 
  on 
  the 
  Wilkes 
  Expedition. 
  The 
  large 
  volume 
  devoted 
  to 
  

   the 
  Zoophytes, 
  and 
  the 
  two 
  volumes 
  of 
  the 
  Crustacea, 
  each 
  

   work 
  with 
  an 
  atlas 
  of 
  beautiful 
  plates 
  most 
  of 
  them 
  drawn 
  by 
  

   himself, 
  are 
  classical 
  works 
  containing 
  the 
  descriptions 
  of 
  hun- 
  

   dreds* 
  of 
  new 
  species 
  and 
  with 
  a 
  philosophical 
  development 
  

   of 
  the 
  classification 
  and 
  the 
  relations 
  of 
  species 
  that 
  is 
  truly 
  

  

  * 
  The 
  number 
  of 
  new 
  species 
  of 
  zoophytes 
  described 
  was 
  over 
  two 
  hundred 
  ; 
  

   in 
  the 
  Report 
  on 
  Crustacea 
  six 
  hundred 
  and 
  eighty 
  species 
  were 
  described, 
  

   of 
  which 
  upwards 
  of 
  five 
  hundred 
  were 
  new. 
  A 
  large 
  part 
  of 
  the 
  collections 
  in 
  

   Crustacea 
  were 
  lost 
  by 
  the 
  wreck 
  of 
  the 
  Peacock 
  on 
  the 
  shores 
  of 
  Oregon. 
  It 
  

   may, 
  perhaps, 
  be 
  worth 
  recalling 
  that 
  many 
  of 
  the 
  type 
  specimens 
  were 
  later 
  de- 
  

  

  