_It is further stipulated and agreed_, That should the parties of the
first part fail to complete the work within the time specified, or
should they deliver work which is not in accordance with the plans and
specifications hereto annexed, only such sum shall be paid for the work
as may be agreed upon by the said parties of the first part and the
Secretary of the Interior; and it is further stipulated and agreed on
the part of the parties of the first part that if the work is not
completed in the time specified and according to the specifications
hereto annexed they will pay to the United States a sum not exceeding
fifty dollars for each and every week after the time specified, such
payments to be deducted from the amount due for work done: _Provided_,
That the Secretary of the Interior, or such person as he may authorize
to do so, may extend the time for the completion of the work.

_And the United States of America_, by the said Cosmos Mindeleff, acting
for the Secretary of the Interior, do hereby contract and agree with the
said parties of the first part that for the aforesaid work, performed
and executed in the manner and under the conditions aforesaid, there
shall be paid to the said parties of the first part the following sums:

For item No. 1. For clearing out the débris, as specified and as above
limited, sixty cents ($0.60) for each cubic yard.

For item No. 2. For underpinning walls, as specified and as above
limited, one dollar ($1) for each cubic foot.

For item No. 3. For filling in cavities, as specified and as above
limited, one dollar ($1) for each cubic foot, including lumber.