23% EUROPEAN AGRICULTURE. 



while that on the removed soil was affected, is not conclusive. 

 It is believed that plants are subject to rust only in particular 

 stages of their growth. Now, on the supposition that the rust 

 in this case was the effect of atmospheric influences, it is im 

 portant to know whether the barley (for the wheat is not com 

 pared with any other wheat) growing on the removed soil, and 

 that growing in its vicinity, were precisely contemporaneous in 

 their growth, or in the degree of ripeness, or approach to ripe 

 ness, which they had attained. Further, it appears that the 

 learned analyst was not himself able to say to what particular 

 ingredient in the soil the rust was owing, nor what manure, if 

 any, was used ; and manure always seriously affects the plant to 

 which it is applied. 



&quot; 3. Soil of a heath which had been brought into cultivation 

 in the vicinity of Brunswick. The analysis was made before 

 any crops had been grown upon it. Com plants [wheat] were 

 first reared upon the new soil, but were found to be attacked by 

 rust, even on those parts which had been manured respectively 

 with lime, marl, potash, wood-ashes, bone-dust, ashes of the heath 

 plant, common salt, and ammonia. One hundred parts contain 



&quot; Silica with coarse silicious sand, 51.337 



Alumina, 0.528 



Protoxide and peroxide of iron, in combination with 



phosphoric and humic acids, 0.398 



Protoxide and peroxide of manganese, 0.005 



Lime in combination with humus, 0.230 



Magnesia, idem, 0.040 



Potash and soda, 0.010 



Phosphoric acid, 0.066 



Sulphuric acid, 0.022 



Chlorine, 0.014 



Humus soluble in alkalies, 13.210 



Resinous matters, 2.040 



Coal of humus and water, 32.100 



100.000.&quot; 



Here it will be seen we come again to fractions as minute as 

 hundred thousandths. 



&quot;The next analysis represents this soil after being burnt. 



