PLATES. 
I.  Illustrative  of  Prof.  T.  R.  Ljle's  Paper  on  an  Expeditious  Practical 
Method  of  Harmonic  Analysis. 
II.  Illustrative  of  Prof.  J.  Perry's  Paper  on  "Winding   Ropes   in 
Mines. 
III.  Illustrative  of  Lord  Rayleigh's   Paper   on   an   Instrument  for 
Compounding  Vibrations. 
IV.  Illustrative  of  Prof.  E.  Rutherford's  Paper  on  some  Properties  of 
the  a.  Rays  from  Radium. 
V.  Illustrative  "of  Mr.  X.  R.    Campbell's  Paper  on  the  Radiation 
from  Ordinary  Materials. 
VI.  Illustrative   of  Mr.  E.  L.  Hancock's   Paper   on  the   Effect   of 
Combined  Stresses  on  the  Elastic  Properties  of  Steel. 
VH.  Illustrative  of  Prof.  A.  Morley  and  Mr.  G.  A.  Tomlinson's  Paper 
on  the  Tensile  Overstrain  and  Recoveiy  of  Aluminium,  Copper, 
and  Aluminium-Bronze. 
VIII.  Illustrative  of  Mr.  R.  L.  Mond  and  Dr.  M.  Wllderman's  Paper 
on  a  New  Improved  Type  of  Chronograph. 
