﻿224 
  Scientific 
  Intelligence. 
  

  

  now 
  recognized 
  as 
  more 
  profitable 
  than 
  the 
  older 
  purely 
  genea- 
  

   logic 
  speculations. 
  All 
  this 
  contributes 
  to 
  far 
  sounder 
  interpre- 
  

   tations 
  of 
  ecologic 
  factors 
  and 
  the 
  course 
  of 
  climatic 
  change 
  in 
  

   the 
  past, 
  as 
  certainly 
  indicated 
  by 
  fossil 
  plants, 
  once 
  understood. 
  

   It 
  should 
  be 
  possible 
  to 
  bring 
  the 
  animal 
  and 
  plant 
  record 
  into 
  

   essential 
  agreement. 
  

  

  Generally 
  speaking, 
  the 
  workers 
  in 
  Paleobotany 
  have 
  been 
  too 
  

   few, 
  and 
  this 
  is 
  only 
  another 
  way 
  of 
  saying 
  that 
  large 
  parts 
  of 
  

   the 
  plant 
  domain 
  have 
  not 
  been 
  explored 
  by 
  men 
  trained 
  in 
  the 
  

   cognate 
  subjects 
  of 
  botany 
  and 
  geology. 
  Thus 
  the 
  immense 
  

   series 
  of 
  petrified 
  gymnosperm 
  stems 
  abundant 
  from 
  the 
  Devo- 
  

   nian 
  to 
  now, 
  has 
  not 
  been 
  determinedly 
  sectioned 
  by 
  anatomists. 
  

   And 
  similarly 
  the 
  purely 
  phytologic 
  record 
  has 
  reached 
  a 
  point 
  

   of 
  congestion, 
  rather 
  than 
  analysis. 
  In 
  the 
  angiosperms, 
  the 
  

   necessary 
  basis 
  of 
  exactly 
  illustrated 
  existent 
  species 
  has 
  even 
  

   remained 
  just 
  where 
  Ettingshausen 
  left 
  it 
  quite 
  sixty 
  years 
  

   ago 
  with 
  a 
  list 
  of 
  some 
  3,000 
  species 
  figured 
  by 
  the 
  so-called 
  

   "nature 
  print" 
  method. 
  This 
  work 
  needs 
  to 
  be 
  extended, 
  espe- 
  

   cially 
  to 
  all 
  tropic 
  species, 
  and 
  there 
  needs 
  to 
  be 
  accumulated 
  a 
  

   new 
  series 
  for 
  the 
  determination 
  of 
  leaf 
  species 
  directly 
  from 
  

   photographs 
  of 
  characteristic 
  areas 
  enlarged 
  to 
  ten 
  diameters. 
  

   The 
  hand 
  lens 
  and 
  camera 
  lucida 
  alone 
  are 
  scarcely 
  sufficient 
  

   aids 
  in 
  detecting 
  and 
  comparing 
  the 
  finer 
  and 
  ultimate 
  features 
  

   of 
  venation. 
  In 
  the 
  case 
  of 
  carbonized 
  tissues 
  freshly 
  treated 
  

   for 
  study 
  before 
  checking 
  sets 
  in, 
  remarkable 
  results 
  have 
  

   already 
  been 
  brought 
  out. 
  g. 
  r. 
  w. 
  

  

  III. 
  Miscellaneous 
  Scientific 
  Intelligence. 
  

  

  1. 
  Publications 
  of 
  the 
  Carnegie 
  Institution 
  of 
  Washington. 
  — 
  

   The 
  following 
  publications 
  of 
  the 
  Carnegie 
  Institution 
  have 
  been 
  

   recently 
  received. 
  (See 
  earlier, 
  vol. 
  48, 
  pp. 
  401, 
  402.) 
  

  

  No. 
  85. 
  Index 
  of 
  economic 
  material 
  in 
  Documents 
  of 
  the 
  

   States 
  of 
  the 
  United 
  States. 
  Pennsylvania, 
  1790-1904. 
  Pre- 
  

   pared 
  for 
  the 
  Department 
  of 
  Economics 
  and 
  Sociology 
  of 
  the 
  

   Carnegie 
  Institution 
  of 
  Washington; 
  by 
  Adelaide 
  R. 
  Hasse. 
  

   Part 
  I—A 
  to 
  E, 
  4to, 
  pp. 
  1-810. 
  

  

  No. 
  185. 
  Index 
  to 
  United 
  States 
  Documents 
  relating 
  to 
  For- 
  

   eign 
  Affairs, 
  1828-1861. 
  In 
  three 
  parts. 
  Part 
  II— 
  I 
  to 
  Q 
  ; 
  by 
  

   Adelaide 
  R. 
  Hasse. 
  4to, 
  pp. 
  795-1331. 
  

  

  No. 
  249. 
  Displacement 
  interferometry 
  by 
  the 
  aid 
  of 
  the 
  

   achromatic 
  fringes, 
  Part 
  IV; 
  by 
  Carl 
  Barus. 
  Pp. 
  122, 
  119 
  

   text 
  figures. 
  

  

  No. 
  270. 
  A 
  Bioehemic 
  Basis 
  for 
  the 
  study 
  of 
  problems 
  of 
  

   Taxonomy, 
  Heredity, 
  Evolution, 
  etc., 
  with 
  especial 
  reference 
  to 
  

   the 
  starches 
  and 
  tissues 
  of 
  parent-stocks 
  and 
  hybrid-stocks 
  and 
  

   the 
  starches 
  and 
  hemoglobins 
  of 
  varieties, 
  species 
  and 
  genera; 
  

   by 
  Edward 
  Tyson 
  Reichert. 
  In 
  two 
  parts. 
  Part 
  I. 
  4to. 
  

   Pp. 
  xi, 
  376, 
  34 
  pis. 
  Part 
  II, 
  pp. 
  vii, 
  377-834. 
  

  

  