Soil & Worm Observation Chamber

exhibit Index: Plans for an airflow worm-bed//Worm harvester//
Soil & worm observation chamber
//Worms galore//Garbage art

Nov. 15, 1993
C Horizon- 1 inch. Small rocks
B Horizon- 4 inch. Subsoil
A Horizon- 3 inch. Topsoil
Artificial Layer of fine white sand
O Horizon- 2 inch. Compost
20 red worms, 4 night crawlers


Worm Observation Chamber Nov. 15, 1993. The Earth's' horizons are visible with each layer of material. 20-red worms and 4- night crawlers were placed inside the chamber.


Worm Observation Chamber after one year. Dec. 1994 - From the top layer 15 Qts. Of wormpoop was taken out and 562 red worms. No night crawlers remained in the chamber.

Soil Profile and
Worm Observation Chamber
Nov. 15, 1993

O Horizon - Organic Horizon
2 inch. Compost
Compost is partially decomposed organic matter such as leaves, garden residue, and food waste. In its active state, compost contains millions of microorganisms and other soil-dwelling organisms which consume the ever changing organic matter and each other.

Artificial Layer -
1 inch. fine white sand (to use as a marker)
The artificial layer is not found in a natural soil profile. It serves as a marker to help with your observations.

A Horizon -
3 inch. Topsoil
Healthy topsoil teams with life. Plant roots, bacteria, fungi and small animals make topsoil a living system. Because it has more organic matter, topsoil is darker than subsoil.

B Horizon -
4 inch. Subsoil
Subsoil, may be brown, red, yellow, or gray. It may be quite sandy. If made up of clay, it will be hard when dry, and stickier when wet than surrounding soil layers. This middle soil layer contains few organisms, but plant roots may penetrate into it.

C Horizon -
1 inch. small rocks, 1-2 inches in diameter

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