"WardsSci000452"

Specially selected subsoil, 1 lb.

Specially selected topsoil, 1 lb.

Great for biology and sediment studies.

4 pounds of limestone chips supplied in a box.

Conglomerate is a sedimentary rock made up rounded quartz pebbles.

Gray, fine to medium-grained “Berea grit”.

Dark, waxy, bitumin-rich.

Sale

Mix designed to experiment with confined clay.

Cemented glacial gravel.

Useful for weathering and erosion, soil formation, porosity and permeability, or other general earth science labs.