240 Tobacco as a Farm Crop for England. 
No. 5. American Leaf Strips (Kentucky). Size 24" by 10." This leaf closely 
resembled No. 1 in appearance and structure, and No. 4 in size. Deeper in 
colour than any English sample, and reddish-brown. Moderately strong 
aromatic odour. 
No. 6. American Western Strips. Size 18" by 8". This leaf was almost 
exactly the same in appearance and structure as No. 3. Deep in colour, but 
not reddish-brown. Dark dull-brown, similar to No. 3, but deeper. Slight 
aromatic odour. 
No, 7. German. Size 15" by 6". Very dark in colour, almost black. 
Thin leaves, not very strong. Veins tough and stringy, strong odour, but 
not aromatic. 
These samjjles, Nos. 5, 6, and 7, were selected, Nos. 5 and 6 on account 
of similarity to English leaves, and No. 7 as being of European growth. 
They were also dried at 100° C. 
The dried leaves of the seven samples were then remeasured, and the 
weights notified, and from these data a rough idea of the relative weights 
of the seven samples was obtained by calculating the weight in grammes 
of one square foot. These results are only approximately accurate, 
owing to the difficulty of measuring the area of such irregular shapes as 
those of tobacco-leaves. They are, however, useful and of interest. The 
following are the results : — 
Weight in Grammes of 1 Square Foot of Leaves dried at 100° C. 
No. 1. No. 2. No. 3. No. 4. No. 6. No. 6. No. 7. 
13-4 7-5 14-5 8-8 7-5 8*6 8-8 
It will be seen that in the English samples, Nos. 1 and 3, the weights per 
square foot are nearly double tho.se of Nos. 5 and 6, to which respectively 
they correspond in appearance, &c. During the process of fermentation 
leaves undoubtedly lose weight, and very considerably so ; but whether they 
would lose so much as the difference above is very doubtful. The samples 
were then broken up, the mid-ribs removed, and the remainder crushed up 
into a coarse powder, and thoroughly mixed to obtain a proper homogeneous 
sample. It was this perfectly dried sample at 100° C. that was taken in all 
cases for analysis and experiment, and all results expressed in percentages of 
leaf refer to the leaf as being in this condition, the only one which could be 
relied upon for constancy, » 
The amount of ash was first determined with the usual precautions. 
Percentage of Ash. 
No. 1. No. 2. No. 3. No. 4. No. 5. No. 6. No. 7. 
25-28 22-87 21-19 23-63 16.49 21-41 19-63 
In every case the ash was white. In burning the English samples, it was 
found necessary to continue the heating from the first or they would not 
burn, and the carbon at a dull red heat burnt off very slowly. In fact, it was 
with difficulty that the last traces were oxiilised. No self-supporting 
combustion took place at all. On first heating an oil distilled off which 
burnt with a very luminous flame, especially so in No, 3, which also burnt 
altogether move readily than the others. The foreign leaves, on the other 
hand, burnt off very readily, and when once ignited, continued to burn 
for some time without continuation of the heat. The e.xact causes of this 
difference in burning i)ropcrtics will not be discussed here. 
From the above results it will bo seen thnt the ash in the English tobacco 
is very high. This is of imjwrtance, as showing that tlio soil has been highly 
manured, and that the i)lant has been probably forced. This is rather 
