"There are 43 stones passing amongst you. It’s called the Tradescant's Ark Experiment and I’ve named it in honor of John Tradescant and John Tradescant, Sr. and Jr., father and son, who were collectors of things in the 17th century. They were the exhibitors of the world's first pay-to-view museum and they had a cabinet of curiosities set up in Lambeth, on the Thames, which much later was sold to Elias Ashmole and became the germ of the Ashmolean Museum. Not much of it survives, there are little parts of it in the Ashmolen Museum. What is more important is the intellectual move they made in the catalog, which John Tradescant the younger created and in which he distinguished between 2 types of things, naturalls and artificialls. He divided all the things he collected into those he thought were natural and those that were modified by human hand—what archaelogists today call artifacts."