Humboldt notch
felling notch that is horizontal on the top and angled on the bottom. Also called Humboldt scarf or reverse scarf (contrast with conventional notch and open-face notch).
felling notch that is horizontal on the top and angled on the bottom. Also called Humboldt scarf or reverse scarf (contrast with conventional notch and open-face notch).
dark-colored. stable form of organic matter that remains after most of plant or animal residues have decomposed.