﻿PROCEEDINGS 
  OF 
  

  

  THE 
  ROYAL 
  SOCIETY. 
  

  

  VOL. 
  XXIII. 
  

  

  No. 
  158. 
  

  

  January 
  7, 
  1875. 
  

  

  CONTENTS. 
  

  

  PAGE 
  

  

  I. 
  Kemarks 
  on 
  a 
  New 
  Map 
  of 
  the 
  Solar 
  Spectrum. 
  By 
  J. 
  Norman 
  Lockyer, 
  

  

  II. 
  On 
  the 
  Spectrum 
  of 
  Coggia's 
  Comet. 
  By 
  William 
  Huggins, 
  D.C.L., 
  

  

  III. 
  On 
  Acoustic 
  Reversibility. 
  By 
  J. 
  Tyndall, 
  D.C.L., 
  LL.D., 
  F.R.S. 
  . 
  . 
  .159 
  

  

  January 
  14, 
  1875. 
  

  

  I. 
  On 
  a 
  Class 
  of 
  Identical 
  Relations 
  in 
  the 
  Theory 
  of 
  Elliptic 
  Functions. 
  By 
  

  

  J. 
  W. 
  L. 
  Glaisher, 
  M. 
  A., 
  Fellow 
  of 
  Trinity 
  College, 
  Cambridge 
  . 
  . 
  .166 
  

  

  II. 
  On 
  some 
  remarkable 
  Changes 
  produced 
  in 
  Iron 
  and 
  Steel 
  by 
  the 
  Action 
  of 
  

  

  Hydrogen 
  and 
  Acids. 
  By 
  William 
  H. 
  Johnson, 
  B.Sc 
  168 
  

  

  January 
  21, 
  1875. 
  

  

  I. 
  On 
  the 
  Origin 
  and 
  Mechanism 
  of 
  Production 
  of 
  the 
  Prismatic 
  (or 
  Columnar) 
  

  

  Structure 
  of 
  Basalt. 
  By 
  Robekt 
  Mallet, 
  F.R.S 
  180 
  

  

  II. 
  On 
  the 
  Anatomy 
  of 
  the 
  Connective 
  Tissues. 
  By 
  Gr. 
  Thin, 
  M.D. 
  .... 
  184 
  

  

  F.R.S. 
  

  

  152 
  

  

  LL.D., 
  F.R.S., 
  For. 
  Sec. 
  R.A.S. 
  (Plate 
  6.) 
  

  

  154 
  

  

  [For 
  continuation 
  of 
  Contents 
  see 
  Mh 
  page 
  of 
  Wrapper.] 
  

  

  