The more perfect the combustion, the fewer 

 deleterious compounds are formed. 



Chlorides, if present, retard the burning of 

 the tobacco, and hence a tobacco which contains 

 a high percentage of chloride, even if it is rich 

 in potash salts, is a poor burning tobacco and 

 therefore faulty. While it is important that 

 the burning should be free and the volatilization 

 as perfect as possible, yet the smoker does not 

 want his tobacco to burn too rapidly. To meet 

 this some manufacturers prepare "slow burn- 

 ing" tobaccos generally by the addition of some 

 chemical which checks the potash. 



The aroma and flavor of the tobacco depend 

 to a great extent on the waxes, resins and oils, 

 as well as on certain of the organic acids. 



REFERENCES 



U. S. DISPENSATORY. 1907 (19th Edition). 

 KISSLING. The Chemistry of Tobacco. Scientific 



American (Supp.) 1905, Vol. 60, No. 1560. 

 CHUARD & MELLETT. Variation de Nicotine dans 



les differents organes de la plante de Tabac. 



Comp. Rend. Acad. d. Sc. (Paris) 1912. Vol. 



155, p. 293. 

 PEZZOLATO, A. Conferenza Sulla Chimica appli- 



cato alia technologia del Tobacco. (Rome. 1903.) 

 WOLF, JACOB. Der Tabak und die Tabak fabri- 



Jcate. Chapter III. Leipzig, 1912. 

 SCHLOSSING. Sur la production de la nicotine par 



la culture du Tabac. Compt. Rend. Acad. d. 

 Sc. (Paris), 1910. Vol. 151, p. 23. 



