﻿SEPT. 
  19, 
  1922 
  baker: 
  new 
  aphids 
  from 
  Baltic 
  amber 
  353 
  

  

  with 
  students 
  to 
  act 
  as 
  assistants 
  and 
  computers, 
  and 
  welcome 
  

   visiting 
  travellers 
  as 
  co-workers. 
  

  

  Geological 
  experiment 
  stations 
  on 
  the 
  mountains 
  of 
  Antarctica, 
  

   the 
  volcanoes 
  of 
  Chile, 
  the 
  sands 
  of 
  Sahara, 
  the 
  tide 
  flats 
  of 
  Fundy, 
  

   the 
  foothills 
  of 
  Himalaya, 
  the 
  forks 
  of 
  the 
  Amazon, 
  eternally 
  measur- 
  

   ing 
  creep, 
  tilt, 
  temperature 
  and 
  flood, 
  will 
  become 
  famous 
  not 
  only 
  

   as 
  harnessing 
  the 
  globe 
  with 
  a 
  web 
  of 
  pure 
  reasoning, 
  but 
  will 
  be 
  fertile 
  

   ground 
  for 
  sowing 
  the 
  seeds 
  of 
  peace 
  and 
  international 
  cooperation. 
  

   Science 
  has 
  been 
  well 
  described 
  by 
  Soddy 
  as 
  man's 
  most 
  eclectic 
  

   religion, 
  and 
  no 
  nation 
  can 
  object 
  to 
  an 
  invasion 
  by 
  scientific 
  mis- 
  

   sionaries. 
  

  

  The 
  basis 
  of 
  physical 
  geology 
  resides 
  in 
  hydrogen 
  and 
  the 
  evolution 
  

   of 
  the 
  elements 
  just 
  as 
  in 
  the 
  case 
  of 
  astronomy. 
  But 
  astronomy 
  is 
  

   basing 
  all 
  its 
  newer 
  work 
  on 
  astrophysics 
  and 
  astrochemistry. 
  It 
  

   is 
  frankly 
  pure 
  and 
  does 
  not 
  worry 
  about 
  getting 
  itself 
  applied. 
  Earth 
  

   science 
  needs 
  a 
  new 
  stimulus 
  in 
  the 
  same 
  direction. 
  The 
  observatory 
  

   method 
  furnishes 
  a 
  worthy 
  and 
  adventurous 
  outlet 
  for 
  the 
  pent-up 
  

   energies 
  of 
  inventive 
  young 
  men 
  trained 
  in 
  geophysics 
  and 
  geochem- 
  

   istry. 
  

  

  PALEONTOLOGY. 
  — 
  Two 
  new 
  aphids 
  from 
  Baltic 
  amber} 
  A. 
  C. 
  

   Baker, 
  Bureau 
  of 
  Entomology. 
  

  

  In 
  several 
  blocks 
  of 
  Baltic 
  amber 
  recently 
  purchased 
  by 
  the 
  writer, 
  

   there 
  are 
  preserved 
  two 
  interesting 
  species 
  of 
  aphids, 
  and 
  a 
  study 
  of 
  

   these 
  specimens 
  throws 
  considerable 
  light 
  on 
  the 
  family 
  as 
  a 
  whole. 
  In 
  

   the 
  writer's 
  generic 
  classification- 
  the 
  genus 
  Mindarus 
  Koch 
  was 
  used 
  

   as 
  the 
  basis 
  of 
  the 
  subfamily 
  Mindarinae, 
  a 
  group 
  supposedly 
  dominant 
  

   in 
  earlier 
  times 
  and 
  quite 
  distinct 
  from 
  the 
  Eriosomatinae 
  in 
  which 
  

   it 
  had 
  formerly 
  been 
  placed. 
  Only 
  one 
  living 
  form 
  is 
  known, 
  Mindarus 
  

   abietinus 
  Koch, 
  a 
  cosmopolitan 
  aphid 
  living 
  on 
  conifers. 
  

  

  The 
  blocks 
  obtained 
  show 
  two 
  alate 
  specimens 
  of 
  a 
  Mindarus 
  very 
  

   similar 
  indeed 
  to 
  abietinus 
  and 
  a 
  young 
  nymph 
  which 
  we 
  believe 
  

   represents 
  one 
  of 
  the 
  earlier 
  instars 
  of 
  the 
  same 
  thing. 
  The 
  remarkable 
  

   similarity 
  between 
  this 
  amber 
  form 
  and 
  our 
  common 
  species 
  can 
  be 
  

   seen 
  by 
  glancing 
  at 
  the 
  figures 
  in 
  which 
  the 
  parts 
  have 
  been 
  drawn 
  

   to 
  approximately 
  the 
  same 
  size. 
  

  

  That 
  the 
  genus 
  Mindarus 
  was 
  formerly 
  well 
  represented 
  seems 
  to 
  

   be 
  fairly 
  assured. 
  Aphis 
  transparens 
  Germ. 
  & 
  Ber.,^ 
  also 
  from 
  amber, 
  

  

  1 
  Received 
  July 
  26, 
  1922. 
  

  

  2 
  Bull. 
  826, 
  U. 
  S. 
  Dept. 
  Agr. 
  1920. 
  

  

  3 
  Org. 
  Reste 
  2^'. 
  pi. 
  2. 
  1856. 
  

  

  