﻿474 
  Scientific 
  Intelligence. 
  

  

  the 
  orbit 
  of 
  the 
  Leonids 
  seen 
  in 
  1866 
  have 
  brought 
  its 
  intersec- 
  

   tion 
  with 
  the 
  ecliptic 
  over 
  1,000,000 
  miles 
  inside 
  the 
  earth's 
  path; 
  

   and 
  it 
  is 
  doubtful 
  whether 
  the 
  stream 
  possesses 
  as 
  great 
  a 
  thick- 
  

   ness 
  as 
  that. 
  

  

  At 
  New 
  Haven 
  the 
  nights 
  ol' 
  Nov. 
  13-14 
  and 
  16-17 
  were 
  per- 
  

   fectly 
  clear, 
  that 
  of 
  Nov. 
  15-16 
  mostly 
  so 
  after 
  1 
  a. 
  m., 
  Nov. 
  

   14-15 
  completely 
  overcast 
  throughout. 
  Watch 
  was 
  kept 
  at 
  the 
  

   Yale 
  Observatory 
  during 
  this 
  period 
  and 
  continuous 
  photographs 
  

   secured. 
  But 
  in 
  all 
  only 
  V 
  meteors 
  of 
  any 
  brightness, 
  6 
  of 
  them 
  

   Leonids, 
  were 
  recorded 
  as 
  falling 
  in 
  the 
  camera 
  fields 
  and 
  none 
  of 
  

   them 
  were 
  bright 
  enough 
  apparently 
  to 
  impress 
  themselves 
  on 
  

   the 
  plates. 
  w. 
  l. 
  e. 
  

  

  2. 
  National 
  Academy 
  of 
  Sciences. 
  — 
  The 
  following 
  is 
  a 
  list 
  of 
  

   the 
  papers 
  accepted 
  ior 
  reading 
  at 
  the 
  meeting 
  of 
  the 
  National 
  

   Academy 
  held 
  in 
  New 
  York 
  on 
  Nov. 
  14, 
  15. 
  

  

  Ogden 
  N. 
  Rood: 
  Variations 
  in 
  normal 
  color 
  vision. 
  

  

  J. 
  McKeen 
  Cattell 
  : 
  The 
  time 
  of 
  percepiion 
  as 
  a 
  measure 
  of 
  difference 
  in 
  

   intensity. 
  Relations 
  of 
  time 
  and 
  space 
  in 
  vision. 
  

  

  Theodore 
  William 
  Richards: 
  The 
  electro-chemical 
  equivalents 
  of 
  copper 
  

   and 
  silver. 
  

  

  Edward 
  C. 
  Pickerixg: 
  Recent 
  results 
  of 
  the 
  Henry 
  Draper 
  Memorial. 
  

  

  R. 
  S. 
  Woodward: 
  The 
  statical 
  properties 
  of 
  the 
  atmosphere. 
  A 
  direct 
  proof 
  

   of 
  the 
  effect 
  on 
  the 
  Eulerian 
  Cycle 
  of 
  an 
  inequality 
  in 
  the 
  equatorial 
  moments 
  of 
  

   inertia 
  of 
  the 
  earth. 
  

  

  George 
  F. 
  Barker 
  : 
  The 
  hydrogen 
  vacua 
  of 
  Dewar, 
  

  

  Charles 
  S. 
  Peirce 
  : 
  The 
  definition 
  of 
  continuity. 
  Topical 
  geometry, 
  in 
  

   general. 
  The 
  map-coloring 
  problem. 
  

  

  E. 
  W. 
  MORLEY 
  : 
  Memoir 
  of 
  W. 
  A. 
  Rogers 
  as 
  a 
  physicist. 
  

  

  Henry 
  P. 
  BowDiTcri 
  : 
  Report 
  of 
  the 
  Delegates 
  to 
  the 
  Wiesbaden 
  Congress 
  to 
  

   consider 
  the 
  establishment 
  of 
  an 
  International 
  Scientific 
  Association. 
  

  

  3. 
  The 
  Races 
  of 
  Europe 
  ; 
  by 
  William 
  Z. 
  Ripley, 
  Ph.D.; 
  

   pp. 
  1-608 
  with 
  a 
  supplementary 
  volume 
  (159 
  pages) 
  on 
  the 
  

   bibliography 
  of 
  the 
  subject. 
  New 
  York, 
  1899 
  (Appleton 
  & 
  Co.). 
  — 
  

   These 
  volumes 
  are 
  by 
  a 
  recognized 
  leader 
  in 
  social 
  science 
  and 
  

   constitute 
  a 
  sociological 
  study, 
  but 
  will 
  be 
  equally 
  w^elcomed 
  by 
  

   historians, 
  anthropologists 
  and 
  geographers. 
  Historians 
  are 
  rec- 
  

   ognizing 
  the 
  need 
  of 
  data 
  regarding 
  the 
  physical 
  make-up 
  and 
  

   traits 
  of 
  the 
  peoples 
  who 
  have 
  been 
  and 
  are 
  now 
  the 
  actors 
  on 
  

   the 
  historical 
  stage. 
  Anthropologists 
  and 
  geographers 
  have 
  long 
  

   known 
  that 
  the 
  fauna, 
  flora, 
  climate 
  and 
  geographical 
  features 
  

   have 
  had 
  a 
  decided 
  influence 
  on 
  the 
  human 
  species, 
  but 
  just 
  how 
  

   much 
  and 
  where 
  these 
  influences 
  have 
  been 
  felt 
  is 
  a 
  ])resent 
  point 
  

   of 
  discussion. 
  It 
  appears 
  from 
  the 
  supplementary 
  bibliography 
  

   that 
  there 
  is 
  a 
  vast 
  amount 
  of 
  raw 
  material 
  regarding 
  races 
  and 
  

   physical 
  enviroimient. 
  Much 
  of 
  it, 
  however, 
  is 
  of 
  uncertain 
  

   quality 
  and 
  not 
  easily 
  accessible. 
  Prof. 
  Ripley 
  has 
  put 
  us 
  under 
  

   obligations 
  by 
  collecting, 
  weighing, 
  interpreting 
  and 
  arranging 
  

   this 
  abundant 
  original 
  material 
  and 
  presenting 
  it 
  in 
  an 
  attractive 
  

   manner. 
  The 
  amount 
  of 
  labor 
  accomplished 
  by 
  the 
  author 
  and 
  

   the 
  saving 
  in 
  time 
  for 
  the 
  reader 
  will 
  be 
  appreciated 
  by 
  those 
  who 
  

   have 
  done 
  similar 
  work. 
  The 
  European 
  races 
  with 
  their 
  colonial 
  

   outgrowths 
  form 
  such 
  complex 
  groups, 
  and 
  their 
  relationships 
  and 
  

  

  