Rules and Examples of Perspective proper for Painters and Architects, etc. / In English and Latin: Containing a most easie and expeditious method to delineate in perspective all designs relating to architecture

by Andrea Pozzo

FIGURA Vigesima.

Basis Acticurga opticè imminuta.

Basis Acticurga Pictoribus præ reliquis familiaris est, quia cum omnibus ferè Ordinibus egregiè consentit. Porrò ex punctis E & F maximæ utrinque latitudinis extimi circuli vestigii, habetur maxima latitudo tori inferioris CD. Ac cætera quæ spectant ad ipsum & ad torum AB, petenda sunt ex dictis de basi Etrusca.