The young folk's cyclopædia of games and sports ; (1899)
Champlin, John Denison, 1834-1915, Bostwick, Arthur Elmore, 1860-1942, joint author · New York, H. Holt and company · leaf 368
20. One of these is folded lengthwisedown the middle and a second placedon it so that only a little margin ofthe first shows ; this margin is lappedover and pasted to the second, whichis then folded lengthwise like thefirst. The desired number of goresis pasted together thus, and then thefree edges… … the line A B, allowing for pasting,multiplied by the number of gores, isthe circumference at the neck, and that at the largest part may be foundin like manner. The length of theballoon will be somewhat less thanthat of the gores. The best shapefor a balloon is as nearly spherical aspossible. A…
Games · Sports · Card games
Internet Archive · Library of Congress · 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-266-446.webp)
