...services in the District of Columbia in accordance with the Classification Act of 1923, as amended, the average of the salaries of the total number of persons under any grade in the Botanic Garden, the Library of Congress, or the Government Printing Office, shall not at any time...

...the Classification Act of 1923, as amended, with the exception of the Assistant Secretaries of War the average of the salaries of the total number of persons under anv grade in any bureau, office, or other appropriation unit shall not at any time exceed the average...