is this true?

[Hagbard Celiene]

so will saltpeter, charcoal, and sulfer, esp when left together... but anyway, just thought i would bring some more facts...

http://www.imaging1.com/thermal/PT_4000B.html

this is what they use...

http://www.imaging1.com/thermal/PT_4000M.html

and don't try growing on a boat either...