Lees and Quastel 1 described an apparatus for the perfusion of soil samples which obviated the need for disturbing the soil during the experiment. Their design was later modified by Audus 2 ...

The apparatus as modified by Audus 2 has been used in the present investigations on the biological oxidation of iron in soil.

Leslie John Audus, an only child, was born on December 9 1911 at Isleham in the fens of Cambridgeshire, a part of the country for which he retained a deep affection for the rest of his life ...