Allkn — Absorption of Water by Vulcanized Fibre and Erinoid. 413 



Table 7. 

 Eecl erinoid ; thickness, - 39 cm. 



The initial weight, after drying, was 4461 grammes, the area of the 

 surface in contact with the moist air 155 sq. cms., and the specific resistance 

 165 times the resistance measured in megohms. 



P is the percentage gain in weight, and x the number of grammes of 

 water absorbed at the end of each interval of immersion in moist air. 



Table 8. 

 Red fibre ; thickness, 0'65 cm. 



The initial weight of this sample was 106*82 grammes, the area in contact 

 with the moist air 275 sq. cms., and the specific resistance 163 times the 

 resistance measured in megohms. 



SCIENT. PROC, R.D.S., VOL. XV., NO. XXXII. 3 U 



