190 



Chart B 5. — Temperature ( ) and Pyrogallic-acid ( ) Reactions. 



< 'ii \ht B 6. — Temperature {standard 



and new calibrations) and Nitric-acid ( ) Reactions. 



!»- 



C73- 



eo* 



02.6" 



OS' 



B7.6* 



oo- 



