186 Mode of cultivating Indian Corn, fcfc. 



This equilateral triangle is preferable to the diamond 

 harrow, in stumpy or rocky land ; I give a preference to 

 the other, in perfectly arable land. 



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The triangle harrows six feet of ground. It is used 

 in the first place as a breaking down harrow, and em- 

 ploys for that purpose eleven teeth, which occupy the 

 two sides of the triangle, and divide the ground, within 

 a fraction, into seven inch spaces. The teeth are so 

 long and sharp as to cut through a sod, or penetrate stiff 

 ground, with a competent weight on the harrow, which 

 four horses can easily draw. The distance of the teeth 

 from each other is so great as to prevent its ever choak- 

 ing. The teeth, being keyed in above, may be easily 

 removed, and turned round, to use the other sharp edge ; 

 for the teeth are flatted, and taper gradually from the 

 under part of the harrow timber to the point, so that the 

 strength of the tooth is fore and aft ; a blacksmith's bill 

 is saved by the economy of turning the tooth. The 

 usual way of putting in harrow teeth is from the top of 

 the harrow, barbing the teeth well, to make them hold, 



