INDEX. 



Page. 



Acids. t)rgauic, relation to biu'ning qualities --_ 22 



salts, effects on Imniiiitx (jualities 18 



Alkalinity of ash. relation to imi-niiii; (|iialities 20 



Ash constituents, effects on burning,' (iiialities 14 



relation of alkalinity to hnrnin;,' (|ualities 20 



Kreedinj;, improvement of hurniiiK qualities by selection 21 



lUn-iiiuf; (|ualities, meaniDi,' of term 8 



Calcium salts, i-ftects on burning qualities 16 



Cellulose, relation to burninj; (lualities 22 



Clilorids. effects on burning (lualities 18 



Combustion process in tobacco and burning with a flame, differences 8 



Comi)ositi(»n of leaf, relation to burning qualities, previous investigations. 10 

 Extraction of tobacco with various solvents, effects on burning (lualities.. l;i, 23 



Extracts of tobacco, water. c()uq)osition 1-4 



Fertilizers containing magnesia, use 25 



Flame, burning with, and combustion process in tobacco, differences 8 



Improvement of burning (|ualities, objects to be attained 24 



Leaf, composition, relation to biu-ning tiualities. previcnis investigations— 10 



Lime, effect on character of ash 22 



Magnesium salts, effects on burning qualities 17 



Nitrates, effects on burning tjualities ^ 18 



Nitrogenous constituents, conditions favoring excessive production 25 



relation to burning qualities — _ 23 



Organic acids, relation to burning (lualities 22 



salts, effects on burning qualities , 18 



constituents, relation to burning qualities 22 



Phosphates, effects on burning qualities 18 



Potash, effect on character of ash 21 



fertilizers, effects of different forms on composition of ash 24 



for tobacco, available sources 24 



partial replacement by lime and magnesia _ 19 



Potassium salts, effect on burning qualities 15, 19 



Sulphates, effects on burning qualities 18 



Sulphur in tobacco, two forms 10 



Tars, tobacco, relation to burning qualities 23 



Water extracts of tobacco, composition . 14 



105 



27 



o 



