An interactive Java applet game in which the reflection of light is compared to the path of a billiard ball. Users view images of a target ball and try to direct a cue ball in such a manner as to hit it.

A complete site from iKnow.net that compares the various phases of mitosis in plant and animal cells. Text is supplemented with pictures of each phase.

A round shield, three feet in diameter, carried by the celites in the Roman army. Though small, compared with the Clipeus, it was so strongly made as to be a very effectual protection. This was probably owing to the use of iron in its...

The patera was a broad and comparatively shallow bowl used for libations, and also for drinking out of at banquets. The following cut gives a front and side view of a bronze patera found at Pompeii. - Anthon, 1891