The magician's own book, or The whole art of conjuring (1862)
Arnold, George, 1834-1865, Cahill, Frank · New York, Dick & Fitzgerald · leaf 329
make that the base of another and lengthened tri-angle, as shown (see Fig. 28). Thus we get the three linesof the side and roofs ; and if we knew the proportionateheight of the side window, by marking the same at a, b, andcarrying the lines from those points to the apex of the tri-angle, we get its… … Fig. 30 shows how two parallelograms in combination as-sist in giving the perspective of a block of stone or bale ofgoods. Fig. 31 exhibits the parallelogram and triangle in combi-nation. Perhaps nothing is more puzzling to the tyro in sketching THE MAGIC OF ART. 813 than the interior of rooms and…
Magic tricks
Internet Archive · University of Pittsburgh Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Eyn schön nützlich Büchlin vnd Vnderweisung der Kunst des Messens mit dem Zirckel, Richtscheidt oder Linial : zu nutz allen Kunstliebhabern fürnemlich den Malern, Bildhawern, Goldschmiden, Seidenstikern, Steynmetzen, Scheinern auch allen Andern so sich der Kunst des Messens (Perspectiua zü latin gnant) zügebrauchen Lust haben : darin Man auch solche Kunst leichter dan ausz etzlichen hieuorgetruckten Büchern begreiffen vn lernen mag mit vil [i.e., 56] schönen darzü dienenden Figuren (1531)](https://img.insideoutlibrary.com/img/200/ia-eynschnntzlichbc00rodl-24-37.webp)
