438 



BELL SYSTEM TECHNICAL JOURNAL 



9.5 



£7.5 



^ 



;5.5 



2 5.0 



2 4.5 



Z 



2 3.0 



!5 2.5 



O 2.0 



0.5 



0.6 0.7 O.e 0.9 1.0 I.I 1.2 



LOG PER CENT MOISTURE CONTENT 



Fig. 2 — Relation between log of per cent moisture content and log insulation re- 

 sistance of raw cotton at 25° C. 



