( 329 ) 



Chemistry. — Prof. C. A. Lohky dk Bruyn presents a i)aper of 

 ,]. F. SuYVEK : "The intr/tiDokcular transformation in the 

 stereo isomeric «- ((nd {i-triikioacet and a- and ^-trithiobenzal- 

 dcliydes''. (N". 11 and 12 on intramolecular rearrangements). 



(Communicated in the meeting ol' Jime :2ö, 190i). 

 (Tliis paper will not be publislied in these Proceedings). 



Chemistry. — Prof. C. A. Lobky dk Bruyn presents a pa[)er of 

 .). W. DiTO: ''The riscositi/ of the sijsteiii hydrazine and loater''. 



(Gommimiealed in the meeting of June ^5, lOii). 

 (This paper will not be published in these Proceedings). 



Chemistry. — Prof. J. M. van Bemmklkn read a paper: "On the 



composition of die silicates in the soil which have been formed 

 from the disintegration of the minerals in the rocks.". 



(This paper will not be published in tliese Proceedings), 



E R R A T U M. 



p. 238, 1. 5 from the bottom, for "increases" read "decreases". 



(November 23, 1804). 



