( 449 ) 



TABLE 1. 



CaO-contents of the liquid phases have, probably, been found a 

 little too high). 



When the figures obtained are given in a graphic representation, 

 it is noticed at once that it is not possible to obtain in this manner 

 a somewhat efficient control as to the composition of the solid sub- 

 stance. Meanwhile, our experiments have shown that, however quickly 

 one may fdter off, never results are found which could point out 

 that the solid substance which is precipitated from sugar sohitions 

 on heating, contains less lime than is indicated by the usual formula 

 of the trisaccharate. 



In Table 1 is also shown, in what proportion the trisaccharate 

 and the calcium hydroxide were present in the solid phases. The 

 percentages of saccharate were obtained by calculating, from the 

 comparison of the lines (^fig. J) 77v and, for instance, RV, the 

 coordinates of 1", and with the aid of these and the coordinates of 



T and k, the relation -— X^OO^). 



From the above it appeared that the progressive change of the 

 decomposition of the saccharate might be studied experimentally as 

 in one of the cases the sacchara,te, after 10 hours, was decomposed 

 to the extent of lOVo- We now" wanted to find experimentally in how 



1) In this way was found : 

 VK 



•^A' 



^^^Vi—^iV, 



in wliich x , x , Xi, Xc, and y , y , y^, y^ indicate the CaO content and tlie 



water content of K, T, liquid phase and residue respectively. For llie calculation, 

 use was made of the formula: 



TK-^ 0,147 (.^;,-^g + 0,459 {y,-y,) 



