[11] "Manufacture of Paper." By C. T. Davis, Philadelphia, 1887.
[12] Patent dated 16th December, 1884, No. 539.
[13] "Forestry and Forest Products," p. 501, and Cross and Bevan's "Text Book of Paper-making," p. 65.
[14] "Practical Paper Maker," by James Dunbar. Mackenzie and Storrie, Leith, 1887.
[15] "Practical Treatise on the Manufacture of Paper." By Carl Hofmann, Philadelphia, 1873.
[16] The Chemist. Edited by Charles and John Watt, p. 552; 1855.
[17] School of Mines Quarterly, a Journal of Applied Science. Jan., 1889.
[18] The cord is a pile containing 128 cubic feet, or a pile 8 feet long, 4 feet high, and 4 feet broad.
[19] Wagner's "Jahresb." 1860, p. 188.
[20] Paper-Makers Monthly Journal, March 15th, 1889.