18 
N. C. AGRICULTURAL EXPERIMENT STATION. 
DESCRIPTION OF THE TOBACCO SOIL. 
The soil upon which this tobacco was grown is a light-gray sand, 
with porous cream colored subsoil. This soil belongs geologically to 
the Laurentian series of the Archsean era, which formation seems to 
be peculiarly adapted for the production of the yellow tobacco for 
which Granville county, N. C., has become famous. The tobacco 
soil, the analysis of which is given below, was not from the same 
field in which the experiment tobacco grew, yet was from the 
same locality, about two miles distant, and represents very closely 
the general character of the best bright tobacco soil. This sample 
was taken from a field of about 30 acres, owned by Mr. J. M. Currin, 
Oxford, N. C. 
The land was cleared about ten years previous and was cultivated 
for four or five years, since which time it has not been in cultivation 
until the summer of 1892, when a fine crop of tobacco was grown. 
The fertilizers used on the soil for this crop consisted of a light 
coat of stable manure and 1,000 pounds of commercial fertilizer to 
the acre. Mr. Currin considers this a typical tobacco soil: 
Coarse materials 
Fine earth .. 
Analysis of Fine Earth : 
Insoluble matter —. . 
Soluble silica.- 
Potash (K 2 0). 
Soda (Na 2 0) . 
Lime (CaO).—.. 
Magncs : a (MgO).-.. 
Peroxide of iron (Fe 2 0 3 ).. 
Alumina (A1 2 0 3 ).. 
Phosphoric acid (P 2 0 5 ).- 
Sulphuric acid (S0 3 ). 
Water (H 2 0). : --- 
Volatile matter. 
Top soil. 
Subsoil. 
7.05 
8.95 
92.95 
96.05 
100.00 
100.00 
95 642 
94.870 
.938 
1.476 
.161 
.057 
.109 
.232 
.240 
.265 
.047 
.056 
.326 
.488 
1.038 
1.872 
.016 
.000 
.055 
• .072 
.312 
.286 
1.510 
1.050 
100.394 
100.724 
ORGANIC ANALYSES IN DETAIL. 
The plans and details of the experiment for comparing the curing 
of tobacco by the leaf-cure and the stalk-cure, and also the results 
with reference to the amount and value of the tobacco as affected by 
the two methods of curing, were fully set forih in Bulletin 86. For 
convenience, the tables giving the amount and money value of each 
grade from each method of curing, is here reprinted. 
