﻿238 
  Scientific 
  Intelligence. 
  

  

  meeting 
  held 
  in 
  New 
  York, 
  on 
  the 
  9th 
  of 
  February, 
  1895, 
  and 
  was 
  

   then 
  unanimously 
  adopted 
  by 
  the 
  Academy. 
  

  

  At 
  the 
  same 
  session, 
  the 
  National 
  Academy 
  of 
  Sciences 
  voted 
  

   to 
  prescribe 
  and 
  publish 
  the 
  specifications 
  relating 
  to 
  the 
  ampere 
  

   and 
  volt, 
  as 
  required 
  by 
  the 
  above 
  law. 
  

  

  To 
  secure 
  the 
  necessary 
  publication 
  of 
  these 
  results, 
  it 
  was 
  also 
  

   voted, 
  that 
  the 
  President 
  of 
  the 
  Academy 
  send 
  a 
  copy 
  of 
  the 
  

   specifications 
  to 
  each 
  house 
  of 
  Congress, 
  and 
  to 
  the 
  Secretary 
  of 
  

   State, 
  with 
  the 
  request 
  to 
  the 
  latter 
  that 
  they 
  be 
  issued 
  by 
  the 
  

   State 
  Department 
  ; 
  and 
  further 
  that 
  the 
  Academy 
  print 
  a 
  suita- 
  

   ble 
  number 
  for 
  public 
  distribution. 
  Certified 
  copies 
  have 
  

   already 
  been 
  transmitted 
  to 
  Congress, 
  and 
  to 
  the 
  State 
  Depart- 
  

   ment, 
  and 
  the 
  official 
  copies 
  to 
  be 
  distributed 
  by 
  the 
  National 
  

   Academy 
  will 
  soon 
  be 
  issued. 
  

  

  This 
  action 
  of 
  the 
  National 
  Academy 
  of 
  Sciences 
  completes 
  the 
  

   law 
  of 
  July 
  12, 
  1894, 
  and 
  makes 
  the 
  legislation 
  of 
  the 
  United 
  

   States 
  on 
  the 
  standards 
  for 
  electrical 
  measure 
  in 
  advance 
  of 
  that 
  

   of 
  any 
  other 
  nation. 
  — 
  o. 
  c. 
  m. 
  

  

  New 
  Haven, 
  Conn., 
  Feb. 
  20, 
  1895. 
  

  

  11. 
  Physics 
  for 
  University 
  Students; 
  by 
  Henry 
  S. 
  Carhart. 
  

   Part 
  I, 
  Mechanics, 
  Sound 
  and 
  Light. 
  344 
  pp. 
  Boston, 
  1894 
  

   (Allyn 
  & 
  Bacon). 
  — 
  This 
  brief 
  and 
  concise 
  text-book 
  has 
  been 
  pre- 
  

   pared 
  by 
  the 
  author 
  to 
  be 
  used 
  by 
  his 
  students 
  in 
  connection 
  

   with 
  the 
  formal 
  course 
  of 
  lectures 
  by 
  which 
  they 
  are 
  introduced 
  

   to 
  the 
  subject 
  of 
  general 
  physics; 
  other 
  teachers 
  similarly 
  situ- 
  

   ated 
  may 
  well 
  find 
  that 
  it 
  also 
  meets 
  their 
  needs. 
  The 
  subjects 
  

   are 
  for 
  the 
  most 
  part 
  presented 
  clearly; 
  a 
  sufficient 
  number 
  of 
  

   suitable 
  illustrations 
  accompany 
  the 
  text. 
  The 
  volume 
  is 
  about 
  

   equally 
  divided 
  between 
  mechanics, 
  sound 
  and 
  light; 
  the 
  sub- 
  

   ject 
  of 
  light 
  would 
  seem 
  to 
  have 
  deserved 
  relatively 
  a 
  somewhat 
  

   greater 
  space 
  than 
  sound. 
  

  

  II. 
  Geology 
  and 
  Minebalogy. 
  

  

  1. 
  The 
  correlation 
  of 
  the 
  Bohemian 
  and 
  Eifilian 
  divisions 
  of 
  

   the 
  Devonian* 
  — 
  As 
  the 
  result 
  of 
  observations 
  made 
  in 
  the 
  neigh- 
  

   borhood 
  of 
  Prague 
  and 
  the 
  examination 
  of 
  the 
  original 
  collec- 
  

   tions 
  of 
  the 
  Bohemian 
  fossils 
  the 
  authors 
  have 
  made 
  a 
  compari- 
  

   son 
  of 
  the 
  faunas 
  of 
  the 
  Barrandian 
  zones 
  F. 
  G. 
  and 
  H. 
  with 
  the 
  

   faunas 
  of 
  the 
  typical 
  Eifelian 
  Devonian. 
  

  

  They 
  show 
  that 
  the 
  Greifenstein 
  limestone 
  of 
  the 
  Rhine 
  con- 
  

   tains 
  a 
  fauna 
  equivalent 
  to 
  the 
  Bohemian 
  fauna 
  of 
  the 
  Mnenian 
  

   limestone, 
  which 
  is 
  above 
  and 
  distinct 
  from 
  that 
  of 
  the 
  Konjeprus 
  

   limestone. 
  The 
  latter 
  limestone 
  is 
  shown 
  to 
  be 
  the 
  equivalent 
  of 
  

   the 
  Hercynian 
  limestone 
  of 
  the 
  Hartz 
  and 
  thus 
  they 
  prove 
  the 
  

   Greifenstein 
  limestone 
  to 
  belong 
  above 
  in 
  the 
  Middle 
  Devonian 
  as 
  

   an 
  equivalent 
  of 
  the 
  Eifelian 
  Cultrijugatus 
  beds. 
  They 
  restrict 
  

   the 
  use 
  of 
  the 
  term 
  Hercynian 
  to 
  the 
  calcareous 
  beds 
  of 
  the 
  lower 
  

  

  * 
  Ueber 
  die 
  stratigraphia" 
  hen 
  Beziehungen 
  der 
  bohmischen 
  Stufen 
  F. 
  Gs. 
  H. 
  

   Barraades 
  zum 
  rheinischen 
  }evon. 
  von 
  E. 
  Kayser 
  in 
  Marburg 
  u. 
  E. 
  Holzapfel 
  in 
  

   Aachen, 
  Jahrb. 
  d. 
  k. 
  k. 
  geol. 
  Beichsanstalt, 
  1894, 
  vol. 
  xliv, 
  Heft 
  3, 
  pp. 
  479-514. 
  

  

  