There is a bug in the PDF version of Wiener's paper : Wiener, Christian. "Geometrische und analytische Untersuchung der Weierstrassschen Function.." Journal für die reine und angewandte Mathematik 90 (1881): 221-252. <http://eudml.org/doc/148462>, the two last pages are included in the next paper, "Distortion of an elastic sphere" by Craig, Thomas