"Ward's+Phenomena"

Erpobdella obscura

Coarse, 'salt and pepper': dark pyroxene and light andesine. Provides perfect representation of an intermediate igneous rock.

Formalin Preserved

Axenic culture. Food organism. Tetrahymena medium.

Characterized by cilia; nearly all possess two types of nuclei.

Classic, very coarse-grained igneous texture.

Formalin Preserved

Dark, waxy, bitumin-rich.

Freshwater. Colonial; polygonal cells. Basic culture solution.

Characterized by green plastids and cell walls composed of cellulose.

Black, Micaceous, glittery metallic.

Deep purple crystal clusters.

Good grade, green, massive; copper ore.

When minerals, rocks, and fossils cannot be accurately identified by macroscopic observation and testing, thin section slides can reveal the composition and structure of the specimens on a microscopic level.

Shiny black volcanic glass showing conchoidal fracture and some spherulites.

Mica group; cut sheets showing basal cleavages. Books and sheets in bulk pack.

Clear, pure cleavages, Mohs’ hardness of 2.

Feldspar group; pink cleavages showing perthitic texture, common potassium feldspar, Mohs’ hardness of 6.