INDEX. 
T 
page 
‘Table, showing the angles at which a pencil of light is pola- 
rised by any number of reflections at the same angle, 145 
Table , containing the calculated and observed polarising 
angles for various bodies, - - - 128 
Tobacco , its effect when applied to the brain, « 74 
V 
Voltaic battery , an account of some experiments with one of 
large dimensions, - - 363 
From ibe Press of 
W. BULMER Car Co. 
Cleveland-row, St. James's, 
London. 
