Swing the sack in a dry place.

It must swing and there must be plenty of flour between the loaves.

It sounds more odd than reasonable, I confess.
"BUCKS COUNTY" HEARTH-BAKED RYE BREAD (AS MADE BY AUNT SARAH) 1 quart sweet milk (scalded and cooled).
1 tablespoonful lard or butter.
2 table spoonsful sugar.
1/2 tablespoonful salt.
1 cup wheat flour.
3 quarts rye flour (this includes the one cup of wheat flour).
1 Fleischman yeast cake or 1 cup of potato yeast.
[Illustration: "BUCKS COUNTY" RYE BREAD] Pour 1 quart of luke-warm milk in a bowl holding 7 quarts.

Add butter, sugar and salt, 1-1/2 quarts rye flour and 1 cup of yeast, or one Fleischman's yeast cake, dissolved in a little lukewarm water.

Beat thoroughly, cover with cloth, and set in a warm place to rise about three hours, or until it almost reaches the top of bowl.