AGRICULTURAL CHEMISTRY. 



should be adapted for the cultivation of 

 beans, and must be ascribed to the depth of 

 the surface-soil. Yet, notwithstanding this, 

 gypsum would form a beneficial manure to 

 the land. 



28. Analysis of a very fertile alluvial soil, 

 from Honigpolderj no manure had ever 

 been applied to it. 100 parts contain : 



Siliceous sand separated by the sieve 

 Earthy portion of the soil 



4-5 

 95-5 



100.0 



100 parts of the latter consisted of: 



Silica, and fine siliceous sand - 64*800 



Alumina - **>', 5*700 



Peroxide of iron ^, 6'100 



Peroxide of manganese - - 0'090 



Lime ..... 5'880 



Magnesia .... 0'840 

 Potash, principally in combination with 



silica - - : - ' '>.' 0*210 



Soda, idem - - 0'393 



Phosphoric acid combined with lime 0'430 



Sulphuric acid, idem - 0'210 



Chlorine (in common salt) - - 0'207 



Carbonic acid, combined with lime 3'92il 



Humus soluble in alkalies 2'54'J 



Humus ... - . 5-60-3 



Nitrogenous matter ... i 5b2 



Water - - ... 1*504 



100-000 



Corn has been cultivated for seventy years 

 upon this soil, which has never received 

 dung or any other kind of manure ; it is, 

 however, occasionally fallowed. The sub- 

 soil retains the same composition as the 

 surface-soil for a depth of 612 feet, so that 

 it may be considered inexhaustible. When 

 one portion of the soil is rendered unfitted 

 for use, the inferior layers are brought up to 

 the surface. 



29. Analysis of a soil from Rahdingen, 

 near Balje. In this case the sea has assisted 

 in the formation of the soil. The field 

 yielded beautiful corn after being manured 

 with stable dung, being particularly re- 

 marked for its fine crops of wheat, beans, 

 and winter barley. 100 parts contain : 



Silica, siliceous sand, and silicates 

 Alumina - . " . 

 Peroxide of iron ' * 



Peroxide of manganese 



Lime 



Magnesia 



Potash and soda soluble in water 

 Phosphoric acid .... 



Sulphuric acid .... 

 Chlorine (in common salt) '" 



Humus, soluble in alkaline carbonates 



Humus 



Nitrogenous matter ... 

 Water ..... 



- 87-012 



- 4-941 



- 2-430 



- 0-192 



- 0-292 



- 0-145 



- 0-005 



- 0-114 



- 0074 



- 0.003 



- 0-658 



- 2-668 



- 1-412 

 0-042 



Peroxide of manganese 



Lime 



Magnesia 



Potash 



Soda 



- - 2-OdO 

 . 0-942 



- - 1-740 

 - 0-050 

 . 0-012 



30. Soil of a field remarkable ft : produ- 

 cing large crops of hemp and hor&e-radish. 

 100 parts consisted of: 



Silica and siliceous sand - 84.021 



Alumina ...... 4-498 



Peroxide of iron 5-120 



Phosphoric acid ..... 0'4S2 



Sulphuric acid ...... 0'012 



Chlorine O'OOS 



Humus soluble in alkaline carbonates - 897 



Humus and nitrogenous matter - - 0'13$ 



100-000 



31. Surface-soil of a field near Dracken- 

 burg ; it produces very bad red clover. 100 

 parts contain: 



Silica, with very fine siliceous sand - 92*014 



Alumina - 2 -652 



Peroxide of iron - - - - 3'192 

 Peroxide of manganese - - - - 0'480 



Lime 0'243 



Magnesia 0'700 



Potash combined with silica - 0.125 



Soda, idem - - - - . - 0-026 

 Phosphoric acid, in combination with lime 0'078 



Sulphuric acid a trace 



Chlorine ...... a trace 



Humus and nitrogenous matter - 0'150 

 Humus soluble in alkaline carbonates - 0'340 



100.000 



The cause that clover will not flourish on 

 this soil is probably due to the deficiency of 

 gypsum and common salt. 



32. Surface-soil of a field near Padding- 

 buttel. This field is particularly adapted 

 for the growth of red clover. 100 parts con- 

 sist of: 



Silica and siliceous sand 

 Alumina \" '_ - 

 Peroxide of iron 

 Peroxide of manganese 

 Lime 

 Magnesia 



93-720 

 1-740 

 2-060 

 0-320 

 0-121 

 0-700 



Potash, principally in combination with silica 0'062 



Soda, idem /* " " - 



Phosphoric acid ^' -~ 



Sulphuric acid .... 



Chlorine (in common salt) 



Humus soluble in alkaline carbonates 



Humus with nitrogenous matter 



0'109 



- 0-103 



- 0-005 



- 0-050 



- 0-890 



- 0-120 



100-000 



SOILS IN BOHEMIA. 



33. Surface-soil of a very fertile field in 

 the province of Dobrawitz and Lautschin. 

 100 parts gave 



Siliceous sand, with much magnetic iron 



sand 4'286 



Earthy part separated by the sieve -95714 



100-000 



An aqueous infusion of the soil contained 

 gypsum, common salt, magnesia, and hu- 

 mus. 100 parts of the soil gave : 



Silica 89-175 



Alumina ...... 2-653 



Protoxide and peroxide of iron - 3'136 



Peroxide of manganese - - - - 0'320 



Lime 1-200 



Magnesia T040 



Potash, in combination with silica 0'075 



Soda, idem (principally) - - - 0'354 



Phosphoric acid, in combination with lime 377 



