 But by the 1840s, silk had started playing in the game, and silk was easier to come by. It had a more ready supply and could be farmed, essentially. And so they would make silk hats that looked like beaver hats, and they even called them silk beaver hats. They had no beaver in them at all, but because they had the top hat shape that had become so associated with beaver, they would still call them beaver hats, but they were really made of silk. So it was just the lack of beaver and then the market moving away from it.