Harrison, Elizabeth, 1849-1927 · St. Louis, Mo., Chicago, Ill., Sigma publishing company · leaf 87
71 THE se;cond GII'T. … No. 8 a. Showing the rubber gift No. 8 h. Showing the rubber gift with its corners pulled out, thus with the corners pushed in, making making outline of the Cube. the skeleton of a sphere. Then came a divided cylinder that could turn in- side out and make a cube. Following the divided cylinder came…
Internet Archive · National-Louis University Library, Archives and Special Collections · Public domain (published before 1931). 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-260-443.webp)
