MS. B, 21a; Pl. LXXXVIII, No. 4.
b) No. 2 on the same plate. Underneath there is the remark:"quest'e come le 8 cappele ano a essere facte"(this is how the eight chapels are to be executed).
c) Pl. LXXXVIII, No. 5. Elevation to the plans on the same sheet, it is accompanied by the note:"ciasscuno de' 9 tiburi no'uole - passare l'alteza - di - 2 - quadri"(neither of the 9 domes must exceed the height of two squares).
d) Pl. LXXXVIII, No. 1. Inside of the same octagon. MS. B, 30a, and 34b; these are three repetitions of parts of the same plan with very slight variations.
D. by a circular chapel:
MS. B, 18a (see Fig. 1 on page 47) gives the plan of this arrangement in which the exterior is square on