II f STORY OF THE PlOW. 



131 



sniull measure of siieecss) l)y drivijig' large plows of the ordinary 

 constructioti twice in the same furrow. The inclined plane per- 

 forms thoroughly the work of a shovel or spade, and much more, 

 taking up the subsoil cleanly from the bottom, leaving a level 

 floor, finely pulverizing and mingling it with the fertile soil, but 

 placing more of the surface soil at and towards the bottom than 

 toward the top, or vice versa, as may be desired, mingling manure 

 also most intimately throughout, when that is used. 



Fig. 4 represents Great Trench Plow No. 1. It cuts a furrow 

 ten inches wide, and has good turning power for any thickness 

 of slice not exceeding ten inches, and is calculated for any depth 

 not greater than twenty inches. It is designed for heavy soils. 



Fig. 5 represents Great Trench Plow No. 2, which is designed 

 for moderately adhesive loams, and for very friable sandy and 

 gravelly soils, and will do the work well two feet deep, or any 

 less that may be required. 



Fig. 6 represents a great Trenching Plow that is constructed 

 for working in loams or clays, but is prepared for the reception 

 of appliances that adapt it for light loams or the most crumbl\ 



