CONTENTS  of  N°  285.— Fourth  Series. 
*  XIX'r  ??  the  Constituti°n  of  Matter.  By  M.  B.  Pell,  B.A  Pro- 
fessor of  Mathematics  in  the  University  of  Sydney,  late  Fellow  of  St. 
John  s  College,  Cambridge. .  . 
°  to   puffe 
m  XX.  On  Testingthe  Metal-resistance  of  Telegraph-wires  or  Cables 
influenced  by  Earth-currents.  By  G.  K.  Winter,  Telegraph  Engi- 
neer, Madras  Railway.  (With  a  Plate.) 
XXI  Observations  on  the  Corona  seen  during  the  Eclipse  of  De- 
cember 11th  and  12th,  1871.  By  G.  K.  Winter,  Telegraph  Engi- 
neer, Madras  Railway.   (With  a  Plate.) ......  ."f. 
a  ^XI/*t  Remalks  on  certain  portions  of  Laplace's  Proof  of  the  Me- 
thod of  Least  Squares.     By  J.  W.  L.  Glaisher,  B.A.,  F.R  A  S 
Fellow  of  Trinity  College,  Cambridge ..." 
XXIII    On  Resonance,  and  on  the  Circumstances  under  which 
Change  of  Phase  accompanies  Reflection.     By  Robert  Moon  M  A 
Honorary  Fellow  of  Queen's  College,  Cambridge ...!.'.' 
XXIV.  On  the  Action  of  Nuclei  in  separating  Gas  or  Vapour  from 
its  Supersaturated  Solution.     By  Charles  Tomlinson,  F.R.S 
XXV.  The  Origin  of  Malaria.     By  Daniel  Vattghan 
A/r^VI*  ^esearches  on  the  Electromotive  Force  in  the  Contact  of 
Metals,   and  on   the  Modification  of  that  Force  by  Heat.     Bv  E 
Edltjnd    J 
XXVII  Notices  respecting  New  Books  :— Researches  on  the  Cal- 
culus of  Variations,  principally  on  the  Theory  of  Discontinuous  Solu- 
tions. By  I  Todhunter,  M.A.,  F.R.S.,  late  Fellow  and  Principal  Ma- 
thematical Lecturer  of  St.  John's  College,  Cambridge.— Technical 
Arithmetic  and  Mensuration.     By  C.  W.  Merrifield,  F.R.S. . .  224-: 
XXVIII.  Proceedings  of  Learned  Societies  :— 
Royal  Society  :— Prof.  J.  Thomson  on  the  Abrupt  Change  at 
Boiling  or  Condensing  in  reference  to  the  Continuity  of  the 
Fluid  State  of  Matter \  2 
Geological  Society 234-2 
XXIX.  Intelligence  and  Miscellaneous  Articles : 
On  Signals   observed  in  a  Wire  joining  the  Earth-plates  in  the 
Neighbourhood  of  a  third  Earth-plate  used  for  a  Telegraphic 
Circuit,  by  G.  K.Winter,  Telegraph  Engineer,  Madras  Railway.  2 
On  a  remarkable  Fault  in  the  New  Red  Sandstone  of  Whi«ton 
Cheshire,  by  Professor  Edward  Hull,  F.R.S.,  Director  of  the 
Geological  Survey  of  Ireland 2i 
Displacement  of  the  Spectral  Lines  by  the  Action  of  the  Tempe- 
rature of  the  Prism,  by  M.  Blaserna    2; 
On  Coloured  Gelatine  Plates  as  Objects  for  the  Spectroscope    Bv 
E.  Lommel r         •% 
V  It  is  requested  that  all  Communications  for  this  Work  mav  be  addresse 
post-paid,  to  the  Care  of  Messrs.  Taylor  and  Francis,  Printing  Office,  R, 
Lion  Court,  Fleet  Street,  London. 
