﻿ARTICLE 
  IX. 
  

  

  Contributions 
  to 
  Electricity 
  and 
  Magnetism. 
  By 
  Joseph 
  Henry, 
  

   Professor 
  of 
  Natural 
  Philosophy 
  in 
  the 
  College 
  of 
  New 
  Jersey, 
  Prince- 
  

   ton, 
  late 
  of 
  the 
  Albany 
  Academy. 
  

  

  No. 
  I. 
  — 
  Description 
  of 
  a 
  Galvanic 
  Battery 
  for 
  producing 
  Electricity 
  

   of 
  different 
  Intensities. 
  Bead 
  before 
  the 
  American 
  Philosophical 
  So- 
  

   ciety, 
  January 
  1 
  4th, 
  1835. 
  

  

  The 
  following 
  account 
  of 
  a 
  Galvanic 
  Battery, 
  constructed 
  under 
  my 
  

   direction 
  for 
  the 
  Physical 
  Department 
  of 
  the 
  College 
  of 
  New 
  Jersey, 
  

   is 
  submitted 
  to 
  the 
  American 
  Philosophical 
  Society 
  with 
  the 
  intention 
  

   of 
  referring 
  to 
  it 
  in 
  some 
  communications 
  which 
  I 
  purpose 
  making 
  on 
  

   the 
  subject 
  of 
  Electricity 
  and 
  Magnetism. 
  It 
  is 
  hoped, 
  however, 
  that 
  

   the 
  arrangement 
  and 
  details 
  of 
  the 
  instrument, 
  in 
  themselves, 
  will 
  be 
  

   found 
  to 
  possess 
  some 
  interest, 
  since 
  they 
  have 
  been 
  adopted 
  in 
  most 
  

   cases 
  after 
  several 
  experiments 
  and 
  much 
  personal 
  labour. 
  

  

  The 
  apparatus 
  is 
  intended 
  to 
  exhibit 
  most 
  of 
  the 
  phenomena 
  of 
  

   Galvanism 
  and 
  all 
  those 
  of 
  Electro-Magnetism, 
  on 
  a 
  large 
  scale, 
  with 
  

   one 
  battery. 
  It 
  was 
  constructed 
  to 
  illustrate 
  the 
  several 
  facts 
  of 
  these 
  

   branches 
  of 
  science 
  to 
  my 
  class, 
  and 
  also 
  to 
  be 
  used 
  as 
  a 
  convenient 
  

   instrument 
  of 
  research 
  in 
  all 
  cases 
  where 
  no 
  very 
  great 
  degree 
  of 
  in- 
  

   tensity 
  is 
  required. 
  

  

  The 
  several 
  parts 
  of 
  this 
  battery 
  are 
  not 
  soldered 
  together 
  forming 
  

   vol. 
  v. 
  — 
  3 
  E 
  

  

  