STUDIES ON THE CURING OP LEAP TOBACCO. 5 



Table I. — Loss in dry weight in air curing tobacco leaves: (A) by the priming method, 



(B) by curing on the stalk. 



Tobacco leaves. 



Weight of 100 dry leaves: 



Uncured grams. . 



Cured do 



Loss of weight in curing, per 

 cent 



Leaves: 



Uncured per cent . . 



Cured do 



Weight of pure ash in 100 

 leaves: 



Uncured grams.. 



Cured do — 



Apparent gain or loss of ash 

 in curing per cent . . 



Loss of organic matter in cur- 

 ing * per cent. . 



A.— Leaves cured by the priming method. 



Havana Seed; 1908 

 (partially cured). 



Leaf 

 web. 



409.5 

 329.4 



72.5 

 67.6 



44.9 

 43.9 



-.24 

 19.6 



Stems. 



155.1 

 157.5 



'-1.6 



27.5 

 32.4 



26. 



1-1.6 



Whole 

 leaf. 



564.6 

 486.9 



13.8 



100 

 100 



71.9 

 70.2 



.29 



Halladay; 1909. 



Leaf 

 web. 



335.2 

 306 



74.1 



75.7 



51.2 

 55.3 



+1.20 



Stems. 



117.2 



25.9 

 24.3 



26.7 

 25.2 



-1.28 

 14.3 



Whole 

 leaf. 



452. 

 404 



100 

 100 



77.9 

 80.5 



+ .57 

 10.9 



Halladay; 1910. 



Leaf 

 web. 



294.8 

 256.4 



13 



70.8 

 72.2 



38.4 

 41.4 



+1.02 

 13.6 



Stems. 



121.4 

 98.6 



18.8 



29.2 

 27.8 



23.3 

 22.2 



-.91 

 17.3 



Whole 

 leaf. 



416.2 

 355 



14.7 



100 

 100 



61.7 

 63.6 



+ .45 

 14.7 





A.— Leaves cured by the priming method. 





Halladay; 1910 

 (partially cured). 



John Williams broadleaf. 



Tobacco leaves. 



1911-A (artificial heat 

 applied). 



1911-B (no artificial 

 heat applied). 





Leaf 

 web. 



Stems. 



Whole 

 leaf. 



Leaf 

 web. 



Stems. 



Whole 

 leaf. 



Leaf 

 web. 



Stems. 



Whole 

 leaf. 



Weight of 100 dry leaves: 



Uncured grams. . 



Cured do 



Loss of weight in curing, per 



269.3 

 234.3 



13 



69.1 



68.4 



34 

 36.3 



+.85 

 13.5 



120.7 

 108.3 



10.3 



30.9 

 31.6 



22.3 

 21.4 



-.74 

 9.1 



390 

 342.6 



12.2 



100 

 100 



56.4 

 57.6 



+.31 

 12.2 



402 

 356.8 



11.2 



77.8 

 80.3 



48.9 

 53.4 



+1.12 

 12.1 



114.8 

 87.6 



23.7 



22.2 

 19.7 



23.8 

 21 



-2.43 

 19.1 



516.8 

 444.4 



14 



100 

 100 



72.7 

 74.4 



+.33 

 14 



402 

 356.5 



11.3 



77.9 

 80.4 



48.3 

 52.2 



+.97 

 12.2 



114 

 87.8 



23 



22.1 

 19.6 



24.2 

 20.9 



-2.89 

 19.9 



516 

 444.3 



13.9 



Leaves: 



Uncured per cent . . 



Cured do 



Weight of pure ash in 100 

 leaves: 



Uncured grams. . 



Cured do 



Apparent gain or loss of ash 

 in curing per cent. . 



Loss of organic matter in 

 curing per cent. . 



100 

 100 



72.5 

 73 



+.11 

 13.9 



i Represents gain. 



* These figures are arrived at by deducting from the total loss in weight the apparent translocation of ash 

 between leaf tissue and stem. See page 6. 



