33 



BURNING QUALITY OF TOBACCO. 



A comparison of the fire-holding capacity of a number of different 

 varieties and types of tobacco was made by the North Carolina Sta- 

 tion 1 in 1895. Strips of tobacco leaves were pressed out flat, dried, 

 ignited, and the time noted during which they continued to hold fire. 

 Several part- of the same leaf and different leave- from the same lot 

 were tested in this way and the results averaged. The following table 

 shows the results of these tests: 



Burning quality of tobacco. 



■ • r type. 



Glow, in seconds. 



Where grown. 



Average. Range. 



ana Eureka New Vork 14 5-35 



hi" wrapper Florida 117 



Strips Ktntuekv 8 5-25 



Barley do 7 -1-18 



. Hybrid Ma-sachu-eti- 13 



German Spinning Lea : Tennessee 11 7-15 



Pennsylvania Seed Lea: Pennsylvania 175 



Havana Seed Leaf Connecticut 16 4-45 



Fancy English Strip- North Carolina 5 4-6 



Virginia 4 2-8 



Austrian Wrapper do 5 3-8 



Italian Regie do 31 10-90 



French - - v Leaf do 5 3-8 



:?ht mahogany wrapper do 4-8 



- Ohi" 24 



Small dark wrapper Virginia _ 14-50 



Marvland 



White Burley Ohio 4 2-6 



Yellow tobacco Georgia 4 



Do Alabama 4-10 



• n Kansas 6 4-10 



Do Mississippi 6 



We^t Virginia 52 1-5-150 



Seed Leaf Illinois 12 4-30 



Light Brown Indiana 10 5-25 



Spani-h type Tennessee 15 5-40 



Bright wrapper deaf cure North Carolina " 3-7 



Brieht wrapper stalk cure do ' 4-7 



: cure do v 4-13 



do 7 4-12 



■jutter deaf cure. do 8 4-15 



i Burned to end of strip. 



b Burned 2i in. anil 



A comparison of the chemical composition of the different samples 

 was made, and it was found that the tobacco having the frest burning 

 quality contained a high percentage of ash constituents, and that a large 

 percentage of lime and potash in proper combination and an increased 

 percentage of cellulose were associated with good burning qualities. 

 In general, thin leaves with a delicate structure burned better than 

 coarse, heavy leaves. The results further indicate that albuminoids 

 seem to be injurious to the burning quality, while nicotine seems to be 

 an unimportant factor in this connection. 



It N generally accepted that tobacco containing a large amount of 

 chlorias has a low fire-holding capacity, and it has been found that an 

 abundance of potash counteracts the effects of chlorin to a certain extent. 



North Carolina Station Bui. No. 122. 



1^931— No. o3- 



