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This small book is divided into five chapters. In chapter I the author would define life as a continuous oxidation-reduction reaction. To study such systems and to express the results in quantitative terms is the object of the book. The problem is essentially concerned with the energy necessary for the growth and existence of organisms and the search for a quantitative method to study reversible oxidation-reduction systems. Electrode potential measurements have proved exact and useful. Preliminary to the actual measurements, oxidation and reduction are discussed in the narrow meaning of the term and also in the wider electrotonic concept of atomic constitution. In the latter, oxidizing properties are due to a tendency to part with electrons; reducing properties to a tendency to take up electrons. Chapter II is concerned with the practical methods of measuring potential differences. The indicator methods and direct electrometric determination are considered. The reasons for each
Oxidation-Reduction Potentials in Bacteriology and Biochemistry. JAMA. 1934;103(1):65. doi:10.1001/jama.1934.02750270067031