by Thomas Jefferson
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 con-
-tain by dropping spirit of nitre till saturated, on that
& on burnt limestone. Rep. Manure. pa. 71
Gypsum a calcareous earth combined with a mineral acid. when the calcareous
earth is predo-
-minent 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.