﻿192 
  JOURNAL 
  OF 
  THE 
  WASHINGTON 
  ACADEMY 
  OE 
  SCIENCES 
  VOL. 
  12, 
  NO. 
  7 
  

  

  692 
  specimens 
  of 
  West 
  Indian 
  plants, 
  chiefly 
  from 
  Trinidad, 
  received 
  as 
  an 
  

   exchange 
  from 
  the 
  New 
  York 
  Botanical 
  Garden; 
  8-36 
  specimens 
  from 
  Brazil, 
  

   collected 
  many 
  years 
  ago 
  by 
  Gardner 
  and 
  containing 
  a 
  large 
  number 
  of 
  

   duplicates 
  of 
  types, 
  received 
  as 
  an 
  exchange 
  from 
  the 
  British 
  Museum; 
  .593 
  

   Panama 
  ferns 
  presented 
  by 
  Mrs. 
  1,- 
  R. 
  Cornman, 
  San 
  Diego, 
  California; 
  

   400 
  specimens 
  from 
  the 
  French 
  Congo, 
  received 
  as 
  an 
  exchange 
  from 
  the 
  

   Jardin 
  Botanique 
  de 
  I'Etat, 
  Brussels; 
  277 
  African 
  grasses 
  collected 
  by 
  Dr. 
  

   H. 
  ly. 
  ShanTz, 
  received 
  as 
  a 
  transfer 
  from 
  the 
  Bureau 
  of 
  Plant 
  Industry, 
  U. 
  S. 
  

   Department 
  of 
  Agriculture; 
  300 
  Panama 
  plants 
  presented 
  by 
  Brother 
  Her- 
  

   IBERTO, 
  Panama 
  City; 
  167 
  Cuban 
  ferns, 
  received 
  as 
  an 
  exchange 
  from 
  the 
  

   New 
  York 
  Botanical 
  Garden, 
  and 
  126 
  Philippine 
  orchids, 
  largely 
  cotypes, 
  

   received 
  as 
  an 
  exchange 
  from 
  Mr. 
  OakES 
  Ames, 
  Boston, 
  Massachusetts. 
  

  

  A 
  series 
  of 
  specimens 
  showing 
  the 
  complete 
  working 
  of 
  the 
  "Manul" 
  

   process 
  of 
  reprinting 
  sent 
  by 
  the 
  Polygraphic 
  Company 
  of 
  Laupen-Berne, 
  

   Switzerland, 
  is 
  on 
  exhibition 
  in 
  the 
  Division 
  of 
  Graphic 
  Arts, 
  vSmithsonian 
  

   Institution. 
  This 
  process 
  eliminates 
  all 
  resetting 
  of 
  type 
  or 
  the 
  use 
  of 
  a 
  

   camera. 
  The 
  page 
  is 
  placed 
  in 
  contact 
  with 
  a 
  sensitized 
  transparent 
  film 
  

   and 
  exposed 
  to 
  the 
  light. 
  The 
  light 
  reflecting 
  from 
  the 
  white 
  parts 
  of 
  the 
  

   original 
  affects 
  the 
  sensitized 
  film 
  while 
  no 
  reflection 
  of 
  light 
  from 
  the 
  blacks 
  

   leaves 
  the 
  film 
  unaltered. 
  This 
  film 
  is 
  used 
  as 
  a 
  negative 
  after 
  being 
  treated 
  

   with 
  coloring 
  matter 
  and 
  transfers 
  the 
  image 
  to 
  the 
  zinc 
  or 
  aluminum 
  plate 
  

   which 
  is 
  printed 
  on 
  a 
  lithographic 
  press 
  in 
  the 
  customary 
  manner. 
  

  

  In 
  this 
  process 
  any 
  work, 
  written, 
  drawn 
  or 
  printed, 
  can 
  be 
  reproduced 
  at 
  

   an 
  obvious 
  saving 
  over 
  older 
  methods 
  involving 
  resetting 
  all 
  type 
  matter 
  or 
  

   making 
  photographic 
  negatives 
  by 
  the 
  use 
  of 
  a 
  lens 
  and 
  camera. 
  The 
  ex- 
  

   hibit 
  includes 
  the 
  original 
  pamphlet, 
  the 
  "Manul" 
  film, 
  the 
  zinc 
  lithographic 
  

   plate 
  and 
  a 
  finished 
  print. 
  

  

  Dr. 
  C. 
  G. 
  Abbot, 
  Assistant 
  Secretary 
  of 
  the 
  Smithsonian 
  Institution, 
  re- 
  

   turned 
  to 
  Washington 
  January 
  4 
  from 
  a 
  trip 
  of 
  inspection 
  to 
  the 
  Institution's 
  

   solar 
  radiation 
  station 
  at 
  Montezuma, 
  near 
  Calama, 
  Chile. 
  

  

  Captain 
  Roald 
  Amundsen, 
  the 
  well-known 
  polar 
  explorer, 
  visited 
  the 
  

   Department 
  of 
  Terrestrial 
  Magnetism 
  of 
  the 
  Carnegie 
  Institution 
  of 
  Wash- 
  

   ington 
  on 
  January 
  16, 
  in 
  order 
  to 
  complete 
  arrangements 
  with 
  regard 
  to 
  

   cooperative 
  work 
  in 
  terrestrial 
  magnetism 
  and 
  atmospheric 
  electricity 
  be- 
  

   tween 
  the 
  Department 
  and 
  his 
  forthcoming 
  expedition 
  to 
  the 
  Arctic 
  Regions. 
  

   During 
  the 
  Northeast 
  Passage, 
  1918-1921, 
  the 
  Amundsen 
  Expedition 
  made 
  

   a 
  series 
  of 
  highly 
  valuable 
  magnetic 
  observations 
  at 
  somewhat 
  over 
  50 
  differ- 
  

   ent 
  points. 
  Captain 
  Amundsen's 
  chief 
  scientific 
  assistant. 
  Dr. 
  H. 
  U. 
  Sverd- 
  

   RUP, 
  has 
  been 
  associated 
  with 
  the 
  Department 
  of 
  Terrestrial 
  Magnetism 
  since 
  

   last 
  October 
  in 
  order 
  to 
  complete 
  the 
  reduction 
  and 
  publication 
  of 
  the 
  mag- 
  

   netic 
  observations 
  thus 
  far 
  obtained 
  by 
  the 
  Expedition. 
  He 
  will 
  rejoin 
  the 
  

   Maud, 
  Captain 
  Amundsen's 
  vessel, 
  early 
  in 
  March 
  at 
  Seattle. 
  It 
  is 
  expected 
  

   that 
  Captain 
  Amundsen 
  will 
  resume 
  his 
  arctic 
  expedition 
  about 
  June 
  1. 
  

   During 
  his 
  brief 
  stay 
  in 
  Washington, 
  Captain 
  Amundsen 
  also 
  paid 
  a 
  visit 
  

   to 
  the 
  non-magnetic 
  ship 
  Carnegie. 
  In 
  the 
  evening 
  he 
  met 
  at 
  the 
  Cosmos 
  

   Club 
  a 
  number 
  of 
  the 
  scientific 
  men 
  of 
  Washington 
  with 
  whom 
  he 
  discussed 
  

   the 
  plans 
  of 
  his 
  arctic 
  expedition, 
  the 
  chief 
  object 
  of 
  which 
  is 
  to 
  obtain 
  scien- 
  

   tific 
  data 
  relating 
  to 
  geography, 
  oceanography, 
  meteorology, 
  gravity, 
  terres- 
  

   trial 
  magnetism 
  and 
  atmospheric 
  electricity. 
  

  

  August 
  Busck 
  has 
  recently 
  returned 
  from 
  an 
  extended 
  trip 
  in 
  the 
  West 
  

  

  