( 4fil ) 

 TABLE 7. 



3 I I Time Liquid phase 



2 Kind of lime and way required for I 



Q. of adding samel ' slaking the ! i ; ■- „ t3 



E lime. j Pol. ^'o CaO Pol. o/,, CaO -t-g = 



CO .5 D. 



QAo 2'/.,'/,) coarse lime r>,, ,„,„,, f„,. it qi, --, -,, 

 ^^ introduced all at once 2»^ "^'""^^^ ^^'^ ' ^"^^ 



80° 

 50^ 



20 minutes 15.0 



2' o'/i fine lime 

 carefully introduced 



I 21'. /o coarse lime g' , hours i 13 

 introduced all at once "^ - "^"'^^ ^'^•" 



0.61 



11.0 

 10.8 



500 i 2^ .,Oo fine lime ^^ minutes 

 ^" ! carefully introduced "" minutes 



12.8 



1.55-), 12.0 

 1.00)! 11-8 



^3.7 I 0.4 



21.3 i-0.5 



22.0 ; 16.0 



22.2 15.8 



S U M M A R Y. 



After some remarks on the manner of experimenting in chemical 

 works it was shown that, in many cases, a not too narrowly con- 

 ceived, more scientific investigation of the questions not yet solved 

 is a desiderdhim. 



Afterwards an explanation was given, based on the phase rule, 

 of the relation of the phenomena theoretically to be expected in 

 complexes containing lime, sugar and water. 



Experiments were then communicated on the decomposition of 

 the trisaccliarate and the situation of the eutectic line at 80°; and 

 those that served for the determination of the line of equilii)rinm 

 (Solubility of Ca(OH), in sugar solutions at 80°). 



Finally, the matter communicated was ajiplied to some well-kuow ii 

 ol)servations and facts. 



Chemistry. — ''On tlw si/sfem snljthuf". By I rof. A. S.mits and 

 Dr. H. L. i)K r.EEUW. (Communicated by Prof. A. F. Hollk.man). 



(Goinmunicaled in the meeting of September 30, 1911). 



As was shown by one of us (Smlts ■') the study of the system .V('^//V/7/r 

 has revealed facts which support the theory of the pheuomeuon allotro[)y. 

 The facts alleged up to now only referred to the intluence of the rapidity 

 of heating on the melting-point; but it was certain that sulphur would 

 yield more evidence in support of this; hence the continuation of 



1) In the first experiment some waterj had evaporated; in the Inllowing unes 

 this was avoided. 



~) The liquid was a little turbid when filtfred. 



3) These Pioc. Vol. Xlll p. 7G3; Zeilschr. f. phys. Cheni. 76, 421 (1911). 



