Thomas Jefferson's Farm Book, page 83

Source Record
Communication: TJs_FarmBook
SOURCE INFORMATION
Author Thomas Jefferson
Document Type Communication: TJs_FarmBook
Date 1772-1826
Place of Origin Monticello
Previous Page Thomas Jefferson’s Farm Book, page 82
Next Page Thomas Jefferson’s Farm Book, page 84
TRANSCRIPTION

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.