Persons engaging in professional work or services pertaining to entomological work, pathological work, horticultural and floricultural work, and tree surgery work as defined in Section 2-28-1 shall be examined by the commissioner.
(Acts 1939, No. 548, p. 866; Code 1940, T. 2, §671; Acts 1992, No. 92-122, p. 207, §3.)