...agents in the construction of said work or by or in consequence of any negligence in guarding the same or by or on account of any act or omission of the said part of the second part or agents ; and the said part of the second part hereby further agree...

...against all suits brought on account of injuries sustained through the construction of the work, " or by or on account of any act or omission of " the contractors or their agents. In addition to this the city was authorized to retain enough money otherwise...

...consequence of any negligence in guarding the same, or of any improper materials used in its prosecution, or by or on account of any act or omission of the said party of the second part or his agents ; and the said party of the second part hereby further...

...in the construction of said work, or by or in consequence of any negligence in guarding the same, or any improper materials used in its construction, or by or on account of act or omission of the said party of the second part or their agents, or by or on account of the infringement...

...materials used in its construction, or by or in consequence of any negligence in grading the same, or by or on account of any act or omission of the said party of the second part, or their agents, and at their own proper cost and expense defend any...

...materials used in its construction, or by or in consequence of any negligence in grading the same, or by or on account of any act or omission of the said party of the second part, or their agents, and at their own proper cost and expense defend any...

...by or from the said contractors, their servants or agents, in the construction of the work, * » * or by or on account of any act or omission of the said parties of the second part, or their agents, in the performance of this agreement." These contracts...

...city against and from all damages or costs to which It may be put by reason of Injury to the person or property of another or others, resulting from negligence...account of any act or omission of the contractor or the agents thereof. The contractor shall be responsible for all damage which may be done to abutting...

...resulting from negligence or carelessness in the performance of the work, or in guarding the same, or from improper materials used In its construction, or by or on account of any act or omission by the said party of the second part or his (their) agents." Simultaneously witli the execution of...

...contractor should indemnify and save the city harmless from claims for such injuries and damages caused "by or on account of any act or omission of the contractor, his servants or agents, and the whole or so much of the moneys due, or to grow . due the contractor...