Know all men by these presents: That A. B., as principal, hereinafter referred to as the Contractor, and we, C. D. and E. F., as sureties and hereinafter referred to as the Surety, are held and firmly bound unto the City of X in the sum of --------- dollars to be paid on demand to the City of X, its successors or assigns, for which payment, well and truly to be made, the undersigned bind themselves, their heirs, executors, administrators, successors and assigns, jointly and severally, firmly by these presents.

Signed and sealed by us this---------day of--------- in the year of our Lord, nineteen hundred and ---------.

The conditions of the above obligations are such that:

Whereas the said Contractor has on this---------day of---------, 19-, entered into a contract with said City for the improvement of ---------, between --------and ---------, in the manner set forth in the foregoing contract, which contract is made a part of this bond the same as though fully set forth herein;

Now, therefore, if the said Contractor shall honestly and faithfully commence, proceed with, perform, and complete all and singular the terms and obligations of said contract and specifications and furnish the materials in accordance with the terms of said contract as it now is and as it may at any time hereafter be changed by any and all modifications or alterations; and shall hold said City harmless from any and all loss or damage in any manner resulting from any failure of the Contractor to comply with said contract and specifications, or resulting in any way from the performance thereof; and shall' further protect and defend said City against and hold said City harmless from any and all claims of any kind that may be filed or asserted against said City at any time, for the use of any patented articles or for the infringement of any patents, and shall further pay all lawful claims of subcontractors, material' men and laborers, for labor performed and material furnished in the carrying forward, performing or completing of said contract; we the undersigned agreeing and assenting that this understanding shall be for the benefit of any subcontractor, material man or laborer having a just claim, as well as for the obligee herein; then this obligation shall be void; otherwise the same shall remain in full force and effect; it being expressly understood and agreed that the liability of the surety for any and all claims hereunder shall in no event exceed the penal amount of this obligation as herein stated.

The said surety hereby stipulates and agrees that no modifications, omissions or additions in or to the terms of said contract or in or to the plans or specifications thereof shall in anywise affect the obligations of said surety on its bond.

In witness whereof, etc.

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For forms of contracts for public improvements, see Sec. 3881 to 3833.