966 LAWS OF MARYLAND. [CH. 501

Provided, however, that the funds herein enumerated and
for the specific purposes herein outlined shall be expended as
herein set forth and shall not be diverted for any other pur-
poses except upon approval by the Board of County Commis-
sioners of Montgomery County and upon the recommendation
of the Supervisor of School Property. The Board of Educa-
tion may apply any unexpended balance from any of the items
herein enumerated to any other items herein enumerated upon
the ratification and approval of the Board of County Commis-
sioners of Montgomery County upon the recommendation of
the Supervisor of School Property.

SEC. 5. And be it further enacted, That the Board of Edu-
cation of Montgomery County shall not award any contract
for any building or construction item wherein the estimated
costs shall exceed the sum of five hundred dollars, without
first having advertised for bids, and all of said expenditures
shall be awarded to the lowest responsible bidder after due
advertisement of the proposals and the time and place of the
opening of said bids; provided, however, that the said Board
of Education shall have the right to reject any or all bids.

SEC. 6. And be it further enacted, That the provisions of
this Act shall be construed as additional and supplementary
to and not in substitution for or in conflict with any of the
provisions of the general laws of this State relating to public
schools, and the powers of the State Superintendent of Schools,
in regard to the plans, construction and erection of public
school buildings.

SEC. 7. And be it further enacted, That for the purpose
of paying the interest on said bonds, and for redeeming the
said bonds as they mature, the said Board of County Com-
missioners of Montgomery County shall for the year 1927,
and annually thereafter, until all of said bonds issued under
the authority of this Act shall mature and be redeemed, levy
a tax upon the assessable property of said county sufficient
to pay the annual interest on said bonds outstanding, and to
redeem said bonds as they mature and become due, said taxes
to be collected as other taxes levied in said county are col-
lected.

SEC. 8. And be it further enacted, That the Board of
County Commissioners for the purpose of carrying out the