Mosaic Philosophy (1638) - Page 19

Fol. 4.

ON MOSAIC PHILOSOPHY.

...of the instrument original: "instrumenti"; the sentence completes the thought from the previous page regarding the weather-glass. directly corresponds to the middle point of the seat of the equator: Since, if the Northern original: "Aquilonaris" or winter Tropic is assumed to be the base of one triangle, whose apex terminates in the center of the summer tropic; and again, if the Southern or

summer Tropic is the base of another triangle, whose apex ends in the center of the Northern Tropic original: "Tropici Borealis"; it is necessary that where the middle intersection is made through these imaginary triangles, the equator passes through that point.

For example.

A large engraving depicting a cosmological or meteorological diagram. A central vertical column is topped by a sphere labeled "Winter Pole" and its base is set into a barrel-like vessel at the bottom labeled "Summer Pole." The column features a numerical scale from 1 to 7 radiating upwards and downwards from a central point.

The entire structure is framed within a large circle. A horizontal midline is labeled "D Equinoctial Line C C D". Above this line, arcs labeled "A Winter Tropic B" curve downwards. Below the midline, symmetrical arcs labeled "E Summer Tropic E" curve upwards. Two large, intersecting triangles (representing cones of influence) are superimposed on the diagram: one triangle has its base on the upper "Winter Tropic" with its apex at the center of the lower tropic; the other triangle has its base on the lower "Summer Tropic" with its apex at the center of the upper tropic. The intersection of these triangles occurs precisely at the "Equinoctial Line."

A 4