﻿88 
  v 
  Scientific 
  Intelligence. 
  

  

  The 
  work 
  in 
  the 
  former 
  area 
  had 
  to 
  do 
  with 
  the 
  investigation 
  of 
  

   the 
  depositions 
  from 
  the 
  geysers 
  and 
  hot 
  springs 
  as 
  influenced 
  by 
  

   algae 
  and 
  possible 
  bacteria 
  ; 
  also 
  the 
  collection 
  of 
  specimens 
  of 
  

   these 
  deposits 
  and 
  of 
  silicified 
  wood 
  for 
  the 
  National 
  Museum. 
  

   The 
  investigations 
  also 
  include 
  the 
  study 
  of 
  the 
  Paleozoic 
  deposits 
  

   of 
  the 
  Mississippi 
  valley 
  by 
  Dr. 
  Ulrich, 
  work 
  in 
  the 
  Ohio 
  valley 
  

   by 
  Mr. 
  Springer, 
  and 
  in 
  Pennsylvania 
  and 
  Virginia 
  by 
  Dr. 
  

   Wherry. 
  Zoological 
  aud 
  botanical 
  explorations 
  have 
  also 
  been 
  

   carried 
  on 
  in 
  St. 
  Thomas, 
  South 
  America, 
  and 
  at 
  several 
  points 
  in 
  

   the 
  Far 
  East. 
  Of 
  the 
  grants 
  from 
  the 
  Hodgkins 
  fund, 
  the 
  most 
  

   important 
  is 
  that 
  to 
  Professor 
  Angstrom 
  for 
  the 
  study 
  of 
  noc- 
  

   turnal 
  radiation. 
  Earlier 
  results 
  were 
  published 
  in 
  1915, 
  and 
  

   later 
  ones 
  have 
  been 
  extended 
  to 
  the 
  Far 
  North 
  during 
  the 
  arctic 
  

   night. 
  

  

  The 
  work 
  of 
  the 
  Institution 
  in 
  its 
  regular 
  departments 
  has 
  gone 
  

   forward 
  as 
  usual, 
  except 
  so 
  far 
  as 
  the 
  war 
  has 
  interfered 
  with 
  

   the 
  Bureau 
  of 
  International 
  Exchanges 
  ; 
  this 
  work 
  is 
  summarized 
  

   by 
  the 
  Secretary 
  and 
  the 
  same 
  subjects 
  are 
  discussed 
  at 
  length 
  by 
  

   the 
  various 
  gentlemen 
  in 
  charge 
  in 
  Appendixes 
  I- 
  VIII. 
  As 
  to 
  

   the 
  work 
  of 
  the 
  Astrophysical 
  Observatory, 
  it 
  may 
  be 
  noted 
  that 
  

   Messrs. 
  Abbot 
  and 
  Aldrich 
  have 
  designed 
  an 
  instrument 
  called 
  

   the 
  pyranometer, 
  so 
  constructed 
  as 
  to 
  measure 
  accurately 
  the 
  

   intensity 
  of 
  skylight 
  by 
  day 
  and 
  the 
  radiation 
  from 
  the 
  whole 
  

   sky 
  at 
  night. 
  The 
  tests 
  which 
  have 
  been 
  made 
  with 
  it 
  prove 
  its 
  

   accuracy 
  and 
  general 
  use, 
  and 
  further 
  indicate 
  that 
  it 
  may 
  be 
  

   suitable 
  even 
  for 
  measurement 
  of 
  radiation 
  in 
  deep 
  shade, 
  as 
  in 
  

   forests 
  and 
  greenhouses. 
  

  

  2. 
  Field 
  Museum 
  of 
  Natural 
  History 
  ; 
  Frederick 
  J. 
  V. 
  

   Skiff, 
  Director. 
  Annual 
  Report 
  of 
  the 
  Director 
  to 
  the 
  Board 
  of 
  

   Trustees 
  for 
  the 
  Year 
  1915. 
  Pp. 
  74; 
  14 
  pis. 
  

  

  Botanical 
  Series. 
  Vol. 
  II, 
  No. 
  11. 
  I. 
  Contributions 
  to 
  North 
  

   American 
  Euphorbiaceae 
  — 
  VI: 
  II. 
  Vegetation 
  of 
  Alacran 
  Reef; 
  

   by 
  Charles 
  F. 
  Millspatjgh. 
  Pp. 
  401-431; 
  maps 
  and 
  illustra- 
  

   tions. 
  

  

  Geological 
  Series. 
  Vol. 
  Ill, 
  No. 
  10. 
  Catalogue 
  of 
  the 
  Collec- 
  

   tion 
  of 
  Meteorites; 
  b}^ 
  O. 
  C. 
  Farrington. 
  

  

  Since 
  the 
  earlier 
  catalogue 
  of 
  1903 
  (see 
  vol. 
  xvii, 
  p. 
  329) 
  the 
  

   Field 
  Museum 
  has 
  acquired 
  the 
  Ward-Coonley 
  collection 
  of 
  620 
  

   falls 
  and 
  an 
  aggregate 
  weight 
  of 
  2,495 
  kilograms, 
  bringing 
  the 
  

   total 
  of 
  the 
  Chicago 
  collection 
  up 
  to 
  the 
  impressive 
  total 
  of 
  657 
  

   falls 
  and 
  7,560 
  kilograms. 
  

  

  Obituary. 
  

  

  Professor 
  Henry 
  H. 
  W. 
  Pearson, 
  the 
  able 
  botanist 
  of 
  Cape 
  

   Town, 
  South 
  Africa, 
  died 
  on 
  November 
  3 
  at 
  the 
  age 
  of 
  forty-six 
  

   years. 
  

  

  Professor 
  Henrik 
  Mohn, 
  for 
  many 
  years 
  director 
  of 
  the 
  

   Norwegian 
  Meteorological 
  Service 
  and 
  an 
  active 
  contributor 
  to 
  

   the 
  subject 
  of 
  meteorology, 
  died 
  in 
  Christiania 
  on 
  September 
  12 
  

   at 
  the 
  age 
  of 
  eighty-one 
  years. 
  

  

  