( 468 ) 
Chemistry. — “On the formation of trisubstituents of benzol from 
disubstituents”. By Prof. A. F. HOLLEMAN (Communicated 
by Prof. C. A. Lopry DE BRUYN). 
(Will be published in the Proceedings of the next meeting.) 
Chemistry. — “Enquiries into the system Tl NO; + Ag NOs’. 
By Dr. C. van Eyk (Communicated by Prof. H. W. Baxuuts 
ROOZEBOOM). 
(Will be published in the Proceedings of the next meeting.) 
(March 28, 1900.) 
