PLATE VI. 



BENZENE DERIVATIVES. 



Carbolic acid with ferric chloride. 



Salicylic acid with ferric chlo- 

 ride. 



Pyrogallic acid with alcoholic 

 solution bf potassium hydroxide. 



Gallotannic acid, precipitated by 



ferric chloride and precipitate dis- 

 solved in excess of tannic acid. 



Santonin with alcoholic solution 

 of potassium hydroxide. 



Acetaiiilid treated successively 

 with hydrochloric acid, carbolic acid, 

 bleaching powder, and ammonia water. 



Aiitipyrine treated with nitric 

 acid. 



Aiitipyrine with solution of sodi- 

 um nitrite and acetic acid. 



