192 
Proceedings of the Royal Society of Edinburgh. [Sess. 
00 . CD <N 03 
05 05 05 03 03 |L h-F^- 
■sn|npo|/\| 
17-5 20 22-5 25 275 30 32 5 
Load in kilos per sq. mm. 
Fig. 5. — Iron. 
