The inventor begins by taking any of the common woods (he keeps the woods steeped in water) which have acquired celebrity for yielding gunpowder charcoal, and sawing them transversely into plates ...

As a result, urea or ammonium-based fertilizers ... and available nitrate, you have lots of opportunity for denitrification straight up, which is moving that nitrate into N2 or into N2O, or nitrifier ...