Thomas Jefferson’s Farm Book, page 83

Rotted dung. cattle, little & big, will make 10 loads [cubic yds] in 6. months if well littered. Logan. D.M. Randolph.

25. such loads serve to manure an acre. Logan.

it would be well worth while to confine & litter cattle in a yard thro’ the summer. Logan.

each head would then manure an acre a year.

dung is carried on in Dec. Jan. Feb.

Marle. an easy method of estimating accurately the quantity of calcareous earth they contain by dropping spirit of nitre till saturated, on that & on unburnt limestone. Rep. Manure. pa. 71.

Gypsum a calcareous earth combined with a mineral acid. when the calcareous earth is predominant it is a good manure, when the 2. ingredients are balanced so as to neutralise it perfectly it is neither good nor bad, when the acid abounds it is injurious. ib. pa. 85.

Manuscript (Massachusetts Historical Society, Thomas Jefferson’s Farm Book, page 83). Scan available online here.

Source Information

Author Thomas Jefferson
Date 1772-1826
Place of Origin Monticello
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