Burn, Robert Scott · London : Ingram, Cooke, and Co. · leaf 24
of distance ; the under lines may be strengthened as in thefigure, which will compensate for the absence of light and shade. Fig.26 affords a good exemplification of the use of the oval or ellipse informing leaves, &c. In the first place, a correct ellipse is to be drawn,thereafter the top a…
Drawing · Wood-engraving
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Divina proportione : opera a tutti glingegni perspicaci e curiosi necessaria oue ciascun studioso di philosophia: prospettiua pictura sculptura: architectura: musica: e altre mathematice: suavissima: sotile: e admirabile doctrina consequira: e delecterassi: co[n] varie questione de secretissima scientia (1509)](https://img.insideoutlibrary.com/img/200/ia-divinaproportion00paci-308-467.webp)
