Nice pics from old books

This afternoon a friend of mine emailed me a picture (the one with the black background) from Goethe’s Theory of Colours with the email header 'Nice pic from old book'. I liked it, so did a bit of a google search and found a scholarly website called colorsystem.com that explains the history and science of colour order. Rather than read all the scientific stuff I decided to look at the illustrations, of which there's many. So many in fact that I forgot to list where all the pictures came from. If you want to find out you could go through the site yourself. I found them while I was looking through the historical articles listed on the left hand menu. Here's the link. xxxx