Record of Experimental Powellised Sleepers laid in open lines. 
36 
hidian 
Fpresi Records. 
[VoL. 
>> 
rS 
d 
u* 
w 
O 
5 
<N 
O 
ojo 
^ ?3 
3^3 
o 
O 
fQ 
irt 
\o 
S3 3 
S S Q 
5 
5 
C 36 ] 
