They are quite accustomed there to dealing with the precipitation of sludge.
It is found at Birmingham that one ton of sludge with 90 per cent.
One who has noticed it in the Teviot says, that the inhabitants there call it "sludge."
No sea-weed, no fishy particles, no sludge, no beards of oysters.
The mud or sludge would form into scale if allowed to remain.
Sludge forms ...