Index to Part Five: Shadow and Light (continued)
Continuation of the Part Five index, chapters 584–603 on the derivative shadow.
The continuation of the Part Five index, headed 'Quinta', listing chapters 584–603 with folio references. The entries concentrate on the derivative shadow — where it is greatest, its 'death', its utmost power, its three figures, natures and species — then turn to the pyramidal shadow, the quality and motion of shadow, whether shadow can be seen through the air, and the many ways the striking (percussione) of the derivative shadow is transformed. The page is a clean index leaf with no illustration.
On this page
The power, death and threefold nature of the derivative shadow (chapters 584–591)
Entries treat the derivative shadow and where it is greatest, its death, its utmost power, and the simple shadow of first darkness. They then set out its three various figures, the variety of each, and that derivative shadows are of three natures and three species.
Pyramidal shadow and the striking of the derivative shadow (chapters 592–603)
Further entries cover the quality and motion of shadow, the pyramidal shadow, and the simple and compound derivative shadow. They ask whether shadow can be seen through the air and whether it is darker in one place than another, and describe how the striking of the derivative shadow is transformed and varies with the primitive, and how surrounding illumination makes the derivative shadow darker than the primitive.