PRN 64318 Post medieval quarry and associated lime kiln, Bully Wells Farm, South Rauceby as depicted on the Ordnance Survey County Series map of 1905.{1} At Boiling Wells limestone was found, softer than Ancaster stone and normally unsuitable for building material, but widely used, after the agricultural revolution at the end of the eighteenth century, as a fertiliser. The limestone quarried at Boiling Wells also had another use: it could be converted into quick lime. Charles Kirk, who ran a very large building firm in Sleaford, had a lime kiln there as early as 1842 and his firm retained it until 1887, when it was sold to the Lord of the Manor, Lord Bristol, for £68.{2} There is no surviving visible evidence for the kiln depicted on the OS County Series map of 1905. {3}