CONTENTS  OF  VOL.  XLIII. 
(FOURTH  SERIES.) 
NUMBER  CCLXXXIII.-JANUARY1872. 
Page 
Prof.   W.  Weber  on   Electrodynamic   Measurements. — Sixth 
Memoir,  relating  specially  to  the  Principle  of  the  Conserva- 
tion of  Energy    1 
The  Rev.  T.  K  Abbott  on  the  Theory  of  the  Tides 20 
Prof.  Challis  on  the  Mathematical  Theory  of  Atmospheric  Tides.     24 
Mr.  J.  E.  H.  Gordon's  description  of  a  new  Anemometer  for 
Indicating  and  Registering  the  Force  and  Direction  of  the 
Wind  at  any  distance  from  the  Vane,  &c.     (With  a  Plate.) . .      32 
Canon  Moseley  on  the  Mechanical  Impossibility  of  the  Descent 
of  Glaciers  by  their  Weight  only 38 
M.  F.  Zollner  on  the  Spectroscopic  Observation  of  the  Rota- 
tion of  the  Sun,  and  a  new  Reversion-Spectroscope     47 
Prof.  Challis  on  the  Solutions  of  Three  Problems  in  the  Calculus 
of  Variations,  in  reply  to  Mr.  Todhunter 52 
Proceedings  of  the  Royal  Society  : — 
Mr.  G.  Gore  on  the  Thermo-electric  Action  of  Metals  and 
Liquids 54 
Proceedings  of  the  Geological  Society  : — 
Prof.  P.   M.  Duncan  on  the  persistence  of  Caryophyllia 
cylmdracea,  Reuss,  in  the  Coral-fauna  of  the  Deep  Sea.  75 
Mr.  J.  W.  Hulke  on  an  Ichthyosaurus  from  Dorset  ....  75 
3Ir.  J.  W.  Hulke  on  a  Fragment  of  a  Teleosaurian  Snout     76 
On  an  Explosion  of  the  Sun,  by  C.  A.  Young     76 
On  the  Transverse  Vibrations  of  Wires  and  Thin  Plates,  by 
M.  E.  Gripon     79 
On  a  new  Phenomenon  of  Phosphorescence  produced  by  Fric- 
tional  Electricity,  by  M.  Alvergniat      80 
NUMBER  CCLXXXIV.— FEBRUARY. 
M.  E.  Edlund  on  the   Electromotive  Force  in  the  Contact  of 
Metals,  and  on  the  Modification  of  that  Force  by  Heat  ....      81 
Mr.  R.  Moon  on  a  Simple  Case  of  Resonance 99 
Mr.  E.  V.  Neale  on  Glacier-motion   104 
Prof.  Clausius's  Contribution  to  the  History  of  the  Mechanical 
Theory  of  Heat 106 
Mr.  H.  Wilde  on  the  Influence  of  Gas-  and  Water-pipes  in  de- 
termining the  Direction  of  a  Discharge  of  Lightning    115 
