For in certain places where they are known to be, are sharp Poles set up fixed in the ground, signifying, that none upon pain of being stuck and impaled upon those Poles, presume so much as to go that way; Also there are certain Rivers, out of which it is generally reported they do take Rubies and Saphires for the Kings use, and Cats eyes.

And I have seen several pretty coloured stones, some as big as Cherry-stones, some as Buttons, and transparent, but understood not what they were.

Rubies and Saphires I my self have seen here.
[Minerals and other Commodities.] Here is Iron and Christal in great plenty.

Salt-Petre they can make.

Brimstone some say, is here, but the King will not have it discovered.