This was submitted by Fritz Dumville, who writes:
>>>>>
The scan I sent you is of Jon's own Piezotone WN samples, one in a
south facing window for four or five days, one not. This was in my own house
so there is no strange industrial atmosphere,
.......
<<<<
The jpg is in:
http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint/files/Ink%20Set
s/PiezoTones/
(copy and paste the address to your browser if it's wrapped to a second line).
Antonis