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This Antique chest was found in Pompeii. It had the form of boxes, prismatic or widening towards the top with short legs and rich mountings of nailheads.

Antique Chest

This Antique chest was found in Pompeii. It had the form of boxes, prismatic or widening towards the…

"Enlarged view of prism of prismatic reflector." —Croft 1917

Prismatic Reflector

"Enlarged view of prism of prismatic reflector." —Croft 1917

"Cross-section of prismatic reflector, showing how light rays are refracted and dispersed." —Croft 1917

Prismatic Reflector

"Cross-section of prismatic reflector, showing how light rays are refracted and dispersed." —Croft…

"Tetragonal. Usually prismatic with pyramid terminations." — Ford, 1912

Rutile

"Tetragonal. Usually prismatic with pyramid terminations." — Ford, 1912

"Scalariform or ladder-like prismatic vessels of a Tree Fern." — Encyclopedia Britanica, 1893

Tree Fern

"Scalariform or ladder-like prismatic vessels of a Tree Fern." — Encyclopedia Britanica, 1893