CONTENTS. 
PAGE 
Introduction.. 3 
Constituents of tobacco._. 4 
Methods of analysis.. 7 
Organic analysis........ 7 
Ash analysis.. 12 
Occurrence of nitrates in tobacco..... 15 
Description of the tobacco soil. 18 
Organic analyses in detail.... ., . 18 
Analyses of whole tobacco leaves, both processes... 20 
Analyses of leaves, both processes, on a sand-free, water-free basis. 22 
Analyses of midribs, both processes, on a sand-free, water-free basis .... 22 
Analyses of whole leaf, both processes, on a sand-free, water-free basis.. 23 
Complete organic analyses of first grade wrapper, both process. 26 
Ash analyses . ^. 27 
Direct analyses of first grade wrapper, both processes. 27 
Ash analyses, exclusive of sand, carbonic acid, and carbon, of first grade 
wrapper, both processes... 29 
Mineral ingredients and total nitrogen in 100 parts of tobacco dried at 
100° C ... . 29 
Analyses of American tobaccos. 30 
Organic analyses of samples dried at 100° C. 31 
Ash analyses.... 32 
Conclusions. 33 
