TLOWING. 51 



as possible. The frost will pulverize the lumps, and the worms, 

 hid in their winter quarters, will hardly have life enough to 

 find their way back again. All soils, except light, sandy, or 

 gravelly soils, that are alread}^ too porous, had better be plowed 

 in the autumn. 



Harrowing is fine plowing, and is only second in importance 

 to it. The harrow is designed to complete the pulverization 

 of the soils, and, as we have said before, the more completely 

 this is done, the better, for many reasons, which we do not need 

 to state. Be as particular to harrow, where the soil is in good 

 condition, as to plow. Harrow your land until the lumps are 

 gone. Lumps are as bad as stones. More so ; for they hold 

 plant food, that the plants will get at if the lumps are pulverized. 

 If the harrow will not do it, roll it and harrow it until the ob- 

 ject is accomplished. Use the roller also on light soils after 

 spring plowing. 



