"PARKWAY PLASTICS, INC."

Gray to brown mudstone with abundant silt.

Dark gray, with hornblende as the dominant mafic mineral.

Typical green-gray, fissile, clay-rich.

Himalayan mineral great for teaching and display.

Well-cemented, medium-grained orthoquartzite.

Good grade, green, massive; copper ore.

Examine Oceanic Water Patterns That Cause the Gulf Stream and El Niño.

Economy LDPE dropper bottles.

Is the victim a male or female?

Demonstrate Characteristics of Primary and Secondary Cells

This set features a handy, economical selection of density cubes.

Two or more magnifiers may be snapped together to produce increased magnification and to illustrate the principles of compound lenses.

Foam brushes are designed for cleaning lab glass and plasticware.

Sterilizing tote boxes are molded from natural polypropylene, and are suitable for food use.

Useful for individual or group study of molecules, these model sets offer an interactive learning opportunity.

Ideal for sampling ponds and lakes.