Our rock club says never lick a green rock.
One curious thing is that I thought the FLU was viral, and surely way back in 1919 there was no kind of microscrope with the resolution capability to detect a virus.
Here's the URL:
http://www.freerepublic.com/focus/news/2369994/replies?c=222
The doctor came upon this one farmer and to his surprise, everyone was very healthy. When the doctor asked what the farmer was doing that was different the wife replied that she had placed an unpeeled onion in a dish in the rooms of the home, (probably only two rooms back then).
The doctor couldn't believe it and asked if he could have one of the onions and place it under the microscope....
Our rock club says never lick a green rock.<<<
I had not heard that one, but am not surprised.
The copper ore here, is high in lead, zinc and moly, so would not be wise to lick.