214 



ANIMAL PROTEINS 



that these various considerations are not based upon any 

 facts relating to the phenomena of imbibition in gels, or in 

 gelatine in particular, but are based upon the behaviour of 

 colloids in endosmosis, kataphoresis, electrolytic precipitation, 

 adsorption, etc. 



Now if we select a few simple figures which are in accord 

 with the above considerations, we can examine the value 



ol the factor a^c** atf"* in a purely illustrative and typical 





 FIG. i, 



way, and at any rate form some idea as to the manner in 

 which it is likely to vary. The figures might be : 



For the sake of simplicity we can assume that these ions 

 are all monovalent. The ions adsorbed by unit mass will 

 then be loc^ , etc. If these hypothetical adsorption iso- 



