1904] 



Cotton by Water and by Water Vapour. 



239 



60' 



75' 



Description of CurvS Diagrams, figs. 1 4. Curves showing change of tempera- 

 ture by cotton while absorbing moisture. Time (t) expressed in minutes. 

 Temperature of cotton (9) in Centigrade degrees, its initial temperature and the 

 constant temperature of the immersion bath being taken as zero. (See Tables I, II, 

 III and IV.) 





Fig. 1. Immersion in water at 16 to 18 C. Cotton = 0'55 gramme. 



(a) Originally dry. 



(b) Containing 18 milligrammes of previous moisture. 



(c) 33 



(d) 68 



Fig. 2. Immersion in saturated air at 18'0. Cotton = 0'53 gramme. 



(a) Originally dry. 



(J) Containing 17*6 milligrammes o previous moisture. 



(c) 32-5 



(0 62-7 



