12 ELEMENTS OF 



3. Change its relation with respect to moisture. 



4. Change its relation with respect to temperature, 



MANURES. 



There are, — 



1. Animal and Vegetable Manures. 



2. Mineral Manures. 



3. Mixed Manures. 



Lime may be applied to the land thus : 



1. It may be laid on the surface of land which is in 

 grass, and remain there until the land is ploughed up 

 for tillage. Lime, in this case, quickly sinks into the 

 soil, and acting upon it, prepares it for crops when it is 

 again tilled. 



2. It may be spread upon the ground, and covered 

 by the plough, just after a crop of any kind has been 

 reaped. 



3. It may be spread upon the surface even when 

 plants are growing. 



4. It may be, and is most frequently, applied during 

 the season in which the land is in fallow, or in prepara- 

 tion for what are termed fallow crops. 



5. It may be mixed with earthy matter, particularly 

 with that containing vegetable remains; forming a 

 compost. 



IMPLEMENTS OF TtlE FARM. 



1. Implements for preparing land for plants to be 

 cultivated. These may be called the Implements of 

 Preparatory Tillage : 



1.. The Plough. 



2. The Harrow. 



3. The Roller. 



2. Machines for Sowing: 



1. Corn in rows. 



