
) 
1922.] The Ninth Indian Science Congress. 18.0. 3 
matical apparatus of theoretical physics, from out the intrica- 
cies of which the concept emerged. But, in answer to this 
universal appeal for a decision, 1 am approaching the subject 
from the standpoint of the ordinary scientific worker, or of 
lai 
: ‘ : 
what has become typified in the expression—the ‘ plain man 
the usual three. 
ay lain man’s opinion is thus invited; and my word 
to-day to this Congress is that I am dissatisfied with these 
world, 
mong these explanations, Einstein’s own book, **Rela- 
tivity: The Special and the General Theory,” ! notwithstand- 
ing the statement in the preface that it is intended as far as 
possible to give an exact insight into the theory to 
general readers, is not the least unsatisfactory as it seems to 
me. This may be accounted for by the author’s transcen- 
ties—but I am not sure of this. The explanations and illus- 
trative cases in that work have the effect on the ‘ovapeeel 
i u 
c 
which has grown up with experimental science and become 
a second seendeibes aueiaak ee common with others I have 
been fascinated and confounded in turn by the theory, 
fascinated by the way Einstein and others parade in a 
daylight and sanction ideas that had previously been regard- 

1 Authorised translation by Robert Lawson (Methuen), 1920. 
