( J23 ) 



As the addition of 0,2 7,, *>* '^ii^'\ to a senim does not yet increase 

 tlie volume by 0,1 "/„, the neglect of it can cause a<, the utmost a 

 difference of 1 in the thiid decimal. As for the experiments with 

 addition of NaCl, consequently the result docs not clian<>e by the 

 new calculation. 



As for the experiments with addition of water, with KCl the 

 difference is reduced from 0,118 G. to 0,0596 G. With NaCl it mounts 

 however from 0,292 G. to 0,447 G. and with CI from <S,5 on 10 cM' 

 1/10 Norm. AgCl-solution. 



I ask myself, if the gentlemen have themselves made the calcu- 

 lations tlipy required me to do. 



Geology. — "Some considerations on the (jeoloyij of Java' . By 

 Prof. K. Martin. 



(This communication wilt not he published in these Proceedings). 



(June 23, 1911). 



