Apparatus for obtaining Nitrogen from Atmospheric Air. 263 
Arr. IX.—Apparatus for obtaining the Nitrogen from Atmos- 
pheric Air; By R. Harz, Prof. of Chemistry in the University 
of Penisvvsnta, Xe. 
AT Ne —— AT) hh 
qua iT 
ii 
i a ip 
Tuts apparatus in its principal parts, differs not from common 
Zasometers. It is provided with a pipe, concentric with the axis of 
the lower vessel, surmounted by a small copper cup. The pipe in 
