December 2010
14 posts
5 tags
2 tags
2 tags
3 tags
4 tags
1 tag
I took an earthenware vessel, placed in it 200 pounds of soil dried in an oven,...
– Jan Baptista van Helmont, 1648
2 tags
2 tags
2 tags
3 tags
4 tags
2 tags
3 tags
1 tag