H NO 
N on, N on, 
NO, vous NO, 
and — 
NO, NO; NO, NO, 
SGA 
NO» 
The last substance is a yellow, properly erystallised substance 
(m. p. 132°) which explodes when heated on platinum foil. Its 
properties will be further investigated. 
Dr. BLANKSMA next investigated the behaviour of m. nitro- and 
m.m. dinitrophenol towards concentrated nitric acid. The result 
obtained thoroughly agreed with the facts just mentioned as there 
had been an abundant formation of tetra- and pentanitrophenol, 
melting respectively at 140° and 190°. 
OH OH 
Va Es oe 
a 
NO an ae as 
NO, 
OH OH 
a NO, Lem NO, 
and wey | 
No, NO: NO, og NO, 
When preparing these two substances Dr. BLANKSMA confirmed 
his previous idea that a precaution should be taken, which other 
chemists (BANTLIN, HENRIQUES), having occupied themselves with 
