The function of linseed oil as a preservative is believed to be related to its action as a water repellent and drying agent rather than a direct biocidal activity.
Petroleum jelly, castor oil, linseed oil, etc. can be used as stabilizers, also to add hydrophobicity to particles and protect metals (especially iron and magnesium) from corrosion.
Their compositions were similar: 25-35% asphalt and 10% linseed oil with lead and iron-based dryers, dissolved in 55% thinners (mineral spirits, turpentine substitute or naphtha).
Various streams provided water power for mills, and by 1859 industries included manufacturers of both leather and linseed oil, two flour mills, two lumber mills, and a large carriage factory.
