. Elementary lessons in the physics of agriculture. Agricultural physics. 131 amount of work can be done with it where there is the neces- sary power to move it, which, although large when running deep, is really small when compared with the amount of soil. Fl<j. 6J. moved. Its rolling, concave, thin discs, when set obliquely, enable it to enter the. soil and overturn it with less compression and relatively less friction than almost any other tool. As a first tool to loosen the soil and dry it rapidly it does excellent work. It is also very eflFective in pulverizing sod and may be used to a
. Elementary lessons in the physics of agriculture. Agricultural physics. 131 amount of work can be done with it where there is the neces- sary power to move it, which, although large when running deep, is really small when compared with the amount of soil. Fl<j. 6J. moved. Its rolling, concave, thin discs, when set obliquely, enable it to enter the. soil and overturn it with less compression and relatively less friction than almost any other tool. As a first tool to loosen the soil and dry it rapidly it does excellent work. It is also very eflFective in pulverizing sod and may be used to advantage in covering soAved peas. This is also an ex- cellent tool to work in a surface dressing of manure. 205. The Acme Harrow.— This tool, so far as its effects upon the soil are concerned, is like the disc harrow, but while it sUces the soil and turns it over it does so with moxe com- pression, more friction and less movement. Like the disc har-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original King, F. H. (Franklin Hiram), 1848-1911. [Madison, Wis. ] The author
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