118 



FLUOPITTINE. 



liquid and will give a black precipitate with lead 

 acetate. 



7. Concentrated hydrochloric acid on warming 

 dissolves it with a violet colour. 



8. Add nitric acid ; the fibrine will turn yellow and 

 dissolve. 



9. Add concentrated acetic or tribasic phosphoric 

 acid ; a gelatinous mass, soluble in water, will be 

 produced. 



10. Tannic acid precipitates it from its solutions, 

 and forms with it in the solid state a hard imputres- 

 cible mass. 



11. Place a portion of fibrine in dilute hydrogen 

 peroxyde ; it will become covered with bubbles of 

 disengaged oxygen. Prove that the gas is oxygen. 



Fluopittine. A resinous body obtained from fluores- 

 centine (q.v.)., showing the following remarkable 

 spectrum. 



AaBC 



HH' 



Spectrum of fluopittine. 



Fluor escentine. An organic base obtained in decom- 

 posing albuminous substances by chemolysis. 



Formic acid CH 2 3 . 1. Obtain from animal sub- 

 stances, as described under Acetic acid, 1 and 2. Formic 

 acid boils at 101 C., giving an inflammable vapour. 



