A Further Investigation of the Symmetrical Chloride of Paranitroorthos 67920 [Full title: A Further Investigation of the Symmetrical Chloride of Paranitroorthosulphobenzoic Acid] [Full author's name: William E. Henderson] [Author: William E. Henderson] [Link: https://www.gutenberg.org/6/7/9/2/67920] [Files: 67920-0.txt; 67920-h.htm] Thanks to The Online Distributed Proofreading Team at https://www.pgdp.net (This file was produced from images generously made available by The Internet Archive) Regards, Al