They make a fine purple colour by treating bilberry in the same way and mixing it with milk. - Vitruvius

The cedar and the juniper tree have the same uses and good qualities... from the cedar is produced an oil called cedar oil. Books as well as other things smeared with this are not hurt by worms or decay. ...the grain of the wood is straight. The statue of Diana in the temple at Ephesus is made of it, and so are the coffered ceilings both there and in all other famous fanes, because that wood is everlasting.

Copious springs are found where there are mines of gold, silver, iron, copper, lead, and the like, but they are very harmful.

In the midst of all this great variety of subjects, an individual cannot attain to perfection in each, because it is scarcely in his power to take in and comprehend the general theories of them.