DISKING AND CULTIVATING, 257 
where the subsoil is well stored with lime and the top 
soil somewhat lime-hungry this machine will do in- 
ealculable good. It is probable that in almost any 
soil meant to be devoted to alfalfa this machine will 
very greatly increase the yield. It is easy to get a 
stand in the clean earth thrown up from below. The 
deep stirring, the aeration, the reservoir for moisture 
all help make the land fit for alfalfa. To deepen sud- 
denly the plow furrow to 16” might on many soils be 
injurious to corn, but it could hardly be anything but 
helpful to alfalfa and corn after the alfalfa would 
reap the benefit. 
The three good purposes secured by use of this 
machine are first, the loosening and aeration of the 
soul, next the turning up of a fresh and unexhausted 
supply of carbonate of lime (which would not be 
found in all subsoils), and third, the making of a 
clean seedbed of fresh earth from the subsoil and the 
burying deep down of weed and grass seeds. 
