THE
EXPLICATION
Of the Eighth Table.
This contains the Proportions of the Ionick Capital, of which only half is seen here: A B is the half of the breadth of the Abacus, which is regulated according to the breadth of the bottom of the Column, of which one half is marked B 18; for the bottom of the Column being divided into 18, 19 are allowed to the Abacus: A C is the Retreat which must be made of the Corner A, of the Abacus inwardly, to draw the Line C D, which must regulate the Eye of the Volute over which it must cross as it passes. To make this Retreat we must take one part and a half of twelve, into which is divided the height or thickness, E F, of the whole Capital, which height is equal to half the breadth of the Abacus. This height, marked C D, is divided into nine parts and a half, of which one and a half is given to the Abacus, and four and a half from the Abacus to the middle of the Eye, which is traversed by the line G H; the Figures 1, 2, 3, 4, mark the four Centers of the first four quarters of the Volute; the four second quarters, and the four third (for the Volutte has twelve) are taken in the Diagonal 1, 3, and 2, 4. H, I, is the Astragal at the top of the Pillar which answers the Eye of the Volute. K K is the Egg or Echinus; L is the Axis of the Volutes; M M is the ceinture of the lateral part of the Volutes. This relates to pag. [103.]
THE
EXPLICATION
Of the Ninth Table.
This contains the Proportions of the Corinthian Capital, which makes all the distinction betwixt Jonick and the Corinthian Order, all other Members, according to Vitruvius, being the same. A is the Corinthian Capital, which has for its height only the Diameter of the bottom of the Column; B is the Capital of the Pantheon, which is higher by a seventh part, viz. the thickness of the Abacus; C D is the height of the Capital divided into seven, of which the Abacus has one, the Voluta’s and Foliages and Stalks two, the Foliage in the Range above two, and that in the Range below two. To have the breadth of the Abacus, we must give to its Diagonal E F the double of its height C D. To have the greatness and just Proportion of its bending H, we must divide the breadth of the Abacus E G into nine parts, and give it one.
At the bottom of this Table is represented the Herb Branbursine, which grows round about the Basket, which is covered with a Tile, from which Vitruvius says the Sculptor Callimachus took the first Model of the Corinthian Capital.
This Table relates to p. [108.]
THE
EXPLICATION
Of the Tenth Table.
This contains the Plan and Elevation of the Theatre of the Romans. AA is the Portico which went round the Theatre below. BB are the Entries through which they parted from the Portico’s into the Orchestra C. KDEDK the Pulpitum or Stage; MM the landing-place which separated the Degrees above from those below: LM the Stairs which are between the degrees. NN the Portico above in the Theatre. PP the Passage under the degrees. TT the Stairs by which they mount to the Portico’s above. KIHIK the Scene. H the royal Gate. II the Gates of Strangers. KK the Gates in returning. OOO the Machines used in changing the Scenes. GG the part of the Theatre behind.