double-worked

A good deal of our pig-manure is, to borrow a phrase from the pomologists, “double-worked.”

Talks on Manures A Series of Familiar and Practical Talks Between the Author and the Deacon, the Doctor, and other Neighbors, on the Whole Subject Joseph Harris 1860

“A load of horse-manure,” said Charley, “after it has been used for bedding pigs, weighs 3,600 lbs., and only 2,300 lbs. when it is thrown into the pens, and I suppose a ton of the ‘double-worked’ manure is fully as valuable as a ton of the fresh horse-manure.

Talks on Manures A Series of Familiar and Practical Talks Between the Author and the Deacon, the Doctor, and other Neighbors, on the Whole Subject Joseph Harris 1860