Harrison, Elizabeth, 1849-1927 · St. Louis, Mo., Chicago, Ill., Sigma publishing company · leaf 216
uts being at right angles to each other. It is again divided three times, parallel to its circular faces into four equal disks or circular tablets; each of these disks or circular tablets is concentrically divided so as to produce a ring three inches in diameter and a ring two inches in diameter… … No. 55. Showing Curvilinear Gift Sixth Gift, repeats and as a whole. emphasizes the two directions brought out by the bricks of the Fourth Gift; so in this, the third, the Curvilinear series, we must again have a repetition of the element brought out by the divided cylinder, namely, the curve of…
Internet Archive · National-Louis University Library, Archives and Special Collections · Public domain (published before 1931). Free to use for anything.