6 H. E. Williams — Action of Neutral Salts on Cellulose 



point below these figures caused almost instantaneous solution 

 of the cellulose. 



From these facts it appears evident that we could plot out 

 the molecular heats of dilution against the viscosities of the 

 solutions for various concentrations, and mark off a sharply 

 defined area ; so that any aqueous solution of a salt of boiling 

 point 133 C. or over, the molecular heat of dilution and 



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 4ooo 



t 



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 to 



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 p 1000 



t 



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A Cilc, u.m C Klortde F.So^' :t*U»\ Thtotv: 



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c C&lci-iunThvot^Anite h.So<K>MT\ »\ 



o Magnesium * PalAAU*W « 



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Fig. 2. 



viscosity of which fell within the prescribed area, would be a 

 solvent for cellulose, and not otherwise. And further it would 

 begin to dissolve cellulose, at all concentrations corresponding 

 with boiling points above 133 C on the viscosity and heat 

 of dilution curve within this area, and cease to be a solvent 

 where the curve passed out and beyond that area. 



This area could of course be very clearly defined on a 



