Farm Book, page 84
by Thomas Jefferson

VII. Plants.
G. Divers supposes that every Cubic yard of a stack of wheat yields
generally 2. bushels of grain. a demi-cord then yields 4 3/4 bushels of
grain and 475 lb of straw & chaff, or perhaps, 1/4 of a ton.
Jo. Watkins says he knows from actual experiment that wheat loses 2. lb in the
bushel weight, from Oct. to January, which is 1. pr. cent pr. month.
he reckons the offal of a bushel of wheat worth 1/ see below.
2 1/2 bush. of seed wheat to the acre produces the maximum 1. Young. exp. agr. 271.
drilling in equidistant rows, those 1. foot apart produce the maximum. ib. 286.292.294.
in the way 2 bush. of seed per acre seems better than 2 1/2. ib. 298.
all September & the first fortnight of October, in England, for sowing, produces most. 310.
too early sowing does more mischief after a clover lay than after a fallow. ib. 306
as to change of seed he establishes these points. 1. from the most opposite climates
are best. 2. wheats from opposite soils also, as do clay wheats on gravel soil, or gravel wheats
on clay soil. 3. wheat which has for some years been of the same neighborhood is
worse than any change that can be made. 1. Exp. agr. 321.
for 5 1/2 bushels of wheat a millar should give a barrel of fineflour, he keeping the offal for 6. bushels he should give a barrel of fine flour, he finding barrel nails, & returns the offal.
6. bushels of wheat worth 360
a barrel contains of fine flour 196
allowance for waste 20 s d
Offal. Seconds lb. 25= [illegible 25 =1/2 bush. of corn. 1-6
Shorts. 2. bushels 50. @ 1-6
bran 3. bushels 69 @ 1/per bushel 3
when wheat is @ 6/ per bush. then the offal is worth 1/ per bushel
to have a barrel of flour & the offal for 6/ instead of a barrel for 5 1/2 is
getting 6/ for the odd half bushel of wheat

on accurate trial 3. bush. of wheat in the chaff as it came from the
threshing machine yielded 1. bush. of clean wheat.

The period for sowing wheat is from Oct. 10. to Nov.10. What is sown either
earlier or later is subject to the fly.