humus-lined

Updated: August 6, 2026

One worm, however, was cut through at 48.5, and another at 51.5 inches beneath the surface. A fresh humus-lined burrow was also met with at a depth of 57 and another at 65.5 inches. At greater depths than this, neither burrows nor worms were seen. As I wished to learn how many worms lived beneath the floor of the atrium a space of about 14 by 9 feet Mr.

Charles Darwin - The formation of vegetable mould through the action of worms, with observations on their habits