Walgenstein, Thomas, 58, 66, 69, 150, 167. Warner, Albert, 160. Warner Bros., 160 Warner, Harry, 160. Warner, Jack, 160. Warner, Sam, 160. Wattson, 176. Wedgwood, Tom, 168. Wells, H. G., 152. Werner, 138, 149, 176. Wet-plate photography: _See_ Photography. Wheatstone, Charles, 109, 110, 169–171. Wheel of Life, 108, 116, 122, 129, 173. _See also_ Plateau-Stampfer Magic Disks. Wheel phenomenon, 86, 87, 91, 92, 169. Whirling Top, 70, 74. Winter Garden Theatre, 160. Witelo (Thuringopolonus), 43, 164. Wolff, Phillip, 176. Wollaston, William Hyde, 84, 169. Wotton, Henry, 166. Y Yarwell, John, 69. Z Zahn, Johann, 62, 66–69, 101, 167. Zion, 176. Zoetrope, 113, 126, 137, 172. Zoopraxinographoscope, 124. Zoopraxiscope, 124, 174. Zoopraxographical Hall, 127. Transcriber’s Notes Punctuation, hyphenation, and spelling were made consistent when a predominant preference was found in the original book; otherwise they were not changed. Accent marks on non-English words were not checked systematically for errors. Simple typographical errors were corrected; unbalanced quotation marks were remedied when the change was obvious, and otherwise left unbalanced. Illustrations in this eBook have been positioned between paragraphs and outside quotations. In versions of this eBook that support hyperlinks, the page references in the List of Illustrations lead to the corresponding illustrations. The Summary at the beginning of each chapter began with a small decorative symbol resembling a tilde. As the decoration is not essential to the text, it has been omitted wherever it occured. The index was not checked for proper alphabetization or correct page references.