An illustration of Cassiopeia in reverse or as seen from without the celestial sphere. The super nova of 1572 (SN 1572) is depicted along the back of the throne.
A depiction of "an instrument which will shew at any houre of the night, how much the Loadstar is either above or beneath the Pole." This illustration is particularly interesting because a former owner made the instrument by stitching a paper disc…
An illustration of a mine ventilation system. The vane (H) orients the wooden vessel (A) so that the vent (C) faces the wind. The wind forces fresh air through a pipe (D) and into the mine.