1617, 618, 619] ANALYSES OF MARSHALL COUNTY LANDS. 291 



'•'circling" be moderately well executed. The soil is formed of a 

 brown loam, which overlies the Orange Sand strata — the loam is 

 generally from six to eight feet in thickness, but sometimes more. 

 The material is, on the whole, rather heavier than that of the yellow 

 loam lands of S. Marshall and Lafayette, and also of darker color 

 — greatly resembling, in these respects, the brown loam of the 

 Southern River Counties (1687) — to which, also, it approaches 

 closely in composition. — The timber consists essentially of Oaks and 

 Hickory ; the Post is perhaps the most prevalent tree, which is 

 accompanied on the more clayey belts, by the Black Jack, on the 

 lighter soils, more prevalently by the Spanish ("Red"), the true 

 Red, and Black Oak. The sturdy and vigorous growth of the Post 

 Oak, and the corresponding characteristic forms of the other 

 trees, denoting a soil of great fertility, are very strikingly devel- 

 oped here. 



617. The soil proper, as at present existing, is not generally rich in 

 vegetable matter, and often differs but little in aspect from the subsoil found at 

 two to three feet ; but we commonly find to the depth of ten to twelve inches 

 from the surface, a soil which differs from the lower layers in being more mellow 

 in cultivation, and having a shade of chocolate or " mulatto " color added to the 

 reddish brown of the subsoil. The following analyses of soil and subsoil of this 

 region, refer to specimens furnished by Judge A. M. Clayton, from his planta- 

 tion near Lamar, and were considered by him fair specimens of the soil of the 

 slopes of the dividing ridge between the waters of Cold Water and Wolf Rivers. 



618. No. 216. Soil op Marshall County Table-lands ; from Judge A. M. 

 Clayton's plantation S. 30, T. 2, R. 1 W.,near Lamar, Marshall county. From 

 a level tract below the summit ridge : 



Depth : Ten inches. 



Vegetation: Hickory, Black Jack and Post Oak, mingled with some Sweet 



Gum and an occasional Spanish Oak. 

 A mellow soil, of a "mulatto" tint. Saturated with moisture at 62.4 deg. 



Fahr., it lost 6.842 per cent water at 400 deg.; dried at which temperature it 



consisted of: 



Insoluble Matter 83.347 



Potash 0.549 



Soda 0.082 



Lime 0.245 



Magnesia 0.479 



Brown Oxide of Manganese 0.760 



Peroxide of Iron 4.798 



Alumina 6.282 



Phosphoric Acid 0.068 



Sulphuric Acid 0.062 



Water and Organic Matter 4.195 



100.033 



619. No. 235. Subsoil of Marshall County Table-lands ; from Judge A. 

 M. Clayton's plantation, S. 30, T. 2, R. 1 W., near Lamar, Marshall county : 



Depth : Ten to twenty inches. 



Vegetation : Same as the preceding. 



A pretty solid, yellowish-brown loam. Saturated with moisture at 62.4 deg. 

 Fahr., it lost 7.423 per cent, of water at 400 deg. Fahr.; dried at which temper- 

 ature, it consisted of" : 



