for P.

i
“We say stone has a memory,’’ Rodney says.
“I can pull a number of prints from one
and grain it off, and later perhaps do something else with it
and grain it off, and then months afterwards I’ll be printing a third time
and some of the image from the first run
might surface in what I’m doing.

 “It’s spooky, but it’s one way
stone is more flexible than metal. You don’t think of it,
since a stone could weigh as much as a thousand pounds
and you can roll a metal plate up
and stick it under your arm. But the memory is useful
if you make a mistake: with stone
you can almost always get the image back, but metal
doesn’t remember. Also,

zinc likes grease and doesn’t like water
so when you’re printing the darker tones
zinc plates tend to fill in to black
since they can’t hold the water to keep the image open.
Aluminum, on the other hand,