"A Further Investigation of the Symmetrical Chloride of Paranitroorthosulphobenzoic Acid" by William E. Henderson is a scientific dissertation submitted in 1897 for the Degree of Doctor of Philosophy at Johns Hopkins University. This work delves into the chemical properties and reactions of the symmetrical chloride of paranitroorthosulphobenzoic acid along with its isomers. The book likely discusses methodologies for the synthesis of this compound, along with its various properties and the implications of its chemical behavior. The dissertation comprises several sections that systematically examine the preparation, properties, and reactions of the symmetrical chloride and its derivatives. Henderson outlines the synthetic approaches for obtaining paranitroorthosulphobenzoic acid and its chloride, followed by detailed experimental results on their reactions with different reagents including alcohols and phenols. The investigation highlights the challenges faced in isolating the symmetrical chloride from its unsymmetrical counterparts and discusses the characteristics of various resulting compounds. In conclusion, the research provides insights into the stability and formation patterns of these chemical entities, adding valuable knowledge to the field of organic chemistry. (This is an automatically generated summary.)