C O N T 
A 
ENT  S 
O F 
V O L.  LX VIII.  Part  l 
lA  LETTER  from  Sir  William  Hamilton,  K.  B* 
F.  R.  S.  to  Sir  John  Pringle,  Bart.  P.  R.  S.  giving 
an  Account  of  certain  Traces  of  Volcanos  on  the  Banks 
of  the  Rhine.  Page  L 
II.  Of  the  Heat , &c.  of  Animals  and  Vegetables.  By  Mr. 
John  Hunter,  F.  R.  S.  p.  7 
III.  The  Force  of  fired  Gun-powder,  and  the  initial  Velocities 
of  Cannon  Balls , determined  by  Experiments',  from  which' 
is  alfo  deduced  the  Relation  of  the  initial  Velocity  to  the 
Weight  of  the  Shot  and  the  Quantity  of  Powder.  By  Mr.. 
Charles  Hutton,  of  the  Military  Academy  at  Woolwich. 
Communicated  by  Samuel  Horfley,  LL.D.  Sec.  R.  S. 
p.  50 
IV.  A new  Cafe  in  Squinting , by  Erafmus  Darwin,, 
M.  D.  F.  R.  S.\  communicated  by  Thomas  Aftle,  Efq. 
F.  R.  S.  p.  86 
V.  A Cure  of  a Mufcular  Contraction,  by  Ele&ricity.  By 
Miles  Partington,  in  a Letter  to  William  Henly, 
► F.R.S.  P-97 
VI.  An 
