Abstract
The part I of the paper made a proportion-analysis of Sacristy's ground plan. This serves as a preliminary study for the the part II which makes a perspective-analysis of the whole compositional structure of the Sacristy. The principal conclusions of the part II are, [1] The perspective ratio (1 : 1/2 : 1/3) of the whole structure of the Sacristy, defined by the author in a narrow sense as a numerical relation applied in the architect's perspective design method, was strictly clarified. The ratio unifies in three-dimension the two-dimensional ratio (1 : 1/2) clarified in the previous analysis of the ground plan. [2] Simple 'standardized' architectural form, the "element-form" of composition was analysed. The perspective ratio means a quantitative relation of the formally unvariable "element-form", which represents theoretically the 'space unity'. The "element-form", composed of a pair of orders and a round arch, is defined by exact numerical, or proportional, relationship. [3] A kind of calculation, the "figurative calculation" named provisionally by the author, was analysed. All possible (needed) "composition-forms", 'standardized form' in Benevolo's sense, are by the calculation produced. "Composition-forms" represent and compose the actual spaces.
