If you see a stone, pick it up. This is Chris’ favourite saying at the moment. Apparently if a stone gets into the equipment at haymaking time it can break it. So while walking around the fields it’s a point a stone and 2 points for the biggest.
One of the widely held old beliefs concerning stones was that they grew in the soil, and then rose to the surface; many countrymen insisted it was no use having stones picked off one’s fields, because the land produced them, and there would soon be as many as ever.
Still quoted into the 19th century, it’s not hard to follow the reasoning when you pick bucketsful off fields each year.