In subsection (1) of section 34 of the Public Health Act 1961 (which provides for the removal by a local authority from a vacant site in a built-up area of an accumulation of rubbish which is seriously detrimental to the amenities of the neighbourhood) for the words “on any vacant site in a built-up area an accumulation of rubbish” there shall be substituted the words “on any land in the open air in their area any rubbish”; and in subsection (2) of that section for the word “site” there shall be substituted the word “land”.