172 Second Note by Dr. Voelcker. 



It is not maintained that anything more than general conclusions can 

 be drawn from these figures, but they show that between the second 

 year and the fourth there has been no diminution, but rather an 

 increase, in both organic matter and nitrogen ; also that the lower 

 depths of the soil have received supplies of both vegetable matter and 

 nitrogen, whereas, as was shown in the case of the old Cheviot turf, 

 these were accumulated more in the.top surface. This wider distribu- 

 tion of the supplies of vegetable matter and nitrogen is of more 

 importance agriculturally than their accumulation in quantity in any 

 particular layer, for, as shown before, the latter may bring with it an 

 unhealthy condition and stagnation. The strongest evidence of 

 improvement, however, is shown in the marked increase from year 

 to year in the root growth and the ready penetration of the rootlets 

 into the subsoil. 



J. A. VOELCKER. 

 Jarauxry, 1906. 



