Re ed Pa ee Pee ee ee ee en a 
M. C. Lea on Picric Acid. 379 
Art. XLIII.—On Picric Acids and some of its Salts, with an 
Advantageous Modification of one of the Processes for obtaining it ; 
by Carey Lea, of Philadelphia. 
Saran in which one atom of hydrogen has been replaced 
ry it.* 
Picric acid, whether crystallized in thin laminze from water, or 
lepic acid of Schunk and the picranisic of Cahours, in both cases 
apparently in consequence mainly of the difference in the appear- 
ance of the alkaline salts of the new acid from that of those 
seri ily made in the following 
picramate of potash, an experiment readily mad nar eta 
tin, which latter must be employed in very small. 
similar van ers may be vane with the ammonia salt, the pure 
