Emblem 16 of Kelly's Terrestrial Astronomy

A cross is shown set upon a globe (possibly the Earth). The leftmost arm of the cross has the Sun disc, while the rightmost arm has the Moon crescent. Within the globe below is a circle with inscribed square and triangle, and this is labelled - Blaudius. Four semicircles are set above the cross, like part of a cosmos diagram. The concentric hemispheres are labelled - Blaudius, Ruffus, Flavus, and Rubeus.