The cocoa will grow almost in the sea and in any soil, but the breadfruit demands humus and a slight attention.

The milpa system of agriculture involves clearing the forest by fire, destroys valuable humus and forces the farmer to seek new fields frequently.

The litter that has not been decomposed, dead microbes and microarthropods, along with their excretions and secretions, mix and form humus.

So, too, when we heat vegetable humus to 100°, nitrification is arrested, because the ferment is killed.

" "Ridebunt valles, ridebunt obvia Tempe, In florem viridis protinus ibi humus.