Evidence of a Structure in Gelatin Gels. 259 



in distilled water and allowed to reimbibe moisture. The rate of 

 swelling was followed by weighing the discs at frequent intervals 

 after removing surface water by blotting with neutral filter paper. 

 The data calculated in grams water imbibed per gram dry gelatin 

 are shown in Fig. 1. 



&r — — 1 



HOURS 



Fig. 2. Showing imbibition curves (in water) for dried sections of a 10 per cent, gel 

 and a 40 per cent. gel. Dried sections of equal surface area and of equal thickness. 



While these curves appear to indicate marked differences in 

 the dried plates, depending on the original concentration of the 

 gel, such a conclusion is open to the criticism that the dried plates, 

 while of equal surface area, were necessarily of unequal thickness. 



