142 LAWS OF MARYLAND. [CH. 57

sion shall desire hereafter to enter into a new basic or under-
lying agreement with the United States of America or with
any agency or bureau thereof or with the National Capital
Park and Planning Commission, for the purpose of adopting
a general or revised park plan of park lands to be acquired
in that portion of the Maryland-Washington Metropolitan
[District lying within Montgomery County and for the pur-
pose of outlining the method of financing the acquisition of
any such park lands, such basic or underlying agreements
shall not be binding upon said Commission or upon the
State of Maryland or upon the County Commissioners of
Montgomery County until the same shall have been ap-
proved by the County Commissioners of Montgomery County.
Agreements supplementary to any contract, or commit-
ment, or amendment thereof, heretofore or hereafter entered
into by the Maryland National Capital Park and Planning
Commission, and having reference (a) to the acquisition of
particular units of land in Montgomery County comprising
portions of a general park plan adopted in any such contract
or commitment and also (b) prescribing the details incident
to financing any such acquisition may hereafter be entered
into by the Maryland-National Capital Park and Planning
Commission with the United States of America or any
agency or bureau thereof or with the National Capital Park
and Planning Commission upon the following conditions:
Each such supplementary agreement shall first be sub-
fitted for approval to the County Commissioners of Mont-
gomery County and said County Commissioners shall ap-
prove said agreement if it shall find,

(a) that the boundaries of the unit of land to be acquired
pursuant to said supplementary agreement are within the
general park plan adopted by the contract or commitment
to which such agreement is supplementary, and

(b) if it shall further find that said Commission will be
able to meet the obligations to be incurred by it in such
acquisitions, including the payment of interest on any such
obligations, from the proceeds of the seven cent (7c) tax
authorized and directed to be levied in that portion of the
Maryland Washington Metropolitan District lying within
Montgomery County; in determining whether said Commis-
sion will be able to meet such obligations from the proceeds
of said tax, the County Commissioners shall compute said
proceeds upon the assessable basis of that portion of the
Maryland-Washington Metropolitan District lying within
Montgomery County for the fiscal year in which such ap-
proval is sought and upon the assumption that the entire
tax levied will be collected so long as any of the obligations
to be incurred pursuant to any such supplementary agree-
ment are outstanding and unpaid.