Reflections on Orlov.

In 1928 Ivan Orlov published a remarkable paper which contains the first formulation of a relevant logic. The paper remained largely unknown to English-speakers until this discovery of relevant logic was shown by Kosta Do en in 1992. By that time the material on relevant logic was well known; however, there is more of interest in Orlov's paper than this: his remarks on intuitionism, the motivation for his construction, and its wider implications. This paper explains and reflects on these matters. [ABSTRACT FROM AUTHOR]