FERR UM. 7 5 



Impurity. Excess of oxide; de- 

 tected volumetrically. 

 Lose. 1 to 5 gr. 



Preparation. 



Tr o ehisci Ferri Redact!. 

 1 gr^in each. 



y. Ferri et -Ammonias Citras. Citrate of Iron 

 find Ammonia, 



Source. Made by dissolving Hydrated Peroxide 

 of Iron (freshly prepared from the Solution of the 

 Persulphate by Ammonia) in a hot solution of Citric 

 Acid, neutralising with Ammonia, and evaporating. 



Characters. Deep red scales, deliquescent; 

 slightly sweet and astringent in taste. Solubility, 

 10 in o of water, almost insoluble in rectified spirit. 



Impurities. Tartrates ; giving crystalline pre- 

 cipitate with acetic acid. Alkaline salts; detected 

 in ash. 



j) ose . 5 to 10 gr. 



Preparation. 



-</ Vinum Ferri Citratis. 1 gr. in 1 fl.dr. of 

 orange wine. Dose, 1 to 4 fl.dr. 



5. Ferri et Quinia Citras. Citrate of Iron and 

 Quinia. 



Source. Made like Ferri et Ammoniae Citras, 

 freshly precipitated Quinia being also dissolved in 

 the Citric Acid solution. 



Characters. Greenish-yellow scales, deliques- 

 cent, bitter and chalybeate in taste. Solubility, 2 

 in 1 of water. 6 gr. contain 1 grain of quinia. 



Impurities. Alkaline salts ; detected in :ish. 

 Other alkaloids instead of quinia; insoluble in ether 

 when precipitated by NH 4 IIO. 



Dose. b to 10 gr. 



f, Feirum Tartaratmn. Tartarated Iron. 



Source. Made like Fern et Ammonite Citrns 

 with Acid Tartrate of Potash instead of Citric A. -i.l. 



Characters. Garnet scales. Solubility, 1 in 4 of 

 water ; sparingly in spirit. 



Impurities. Ammonia ; evolved by boiling with 

 liquor sodae. Ferrous salts. 



Dose. o to 10 gr. 



