1. The said parties of the second part, their survivors and successors, trustees as aforesaid, in all their acts and doings in the execution and performance of said contract, and in the execution of their several trusts and conditions herein set forth, shall act by the concurrent assent of four of their number, expressed in writing, or by yea and nay vote, at a meeting of said trustees, either or both of which shall be recorded in a book of proceedings of said trustees, kept for the purpose by their secretary, and not otherwise. 2. Said parties of the second part shall keep an office in the city of New York for the transaction of the business incidental to said trust. Meetings of said trustees may be held on call of the secretary on request of any two of their number; such call may be made personally or by mail. 3. The said trustees shall appoint a competent person as secretary, who shall keep a faithful record of all their acts, proceedings, and contracts, in books to be provided for that purpose, and shall cause to be kept suitable books of accounts and vouchers of all their business transactions, which books shall at all times be open to the inspection of any of said trustees. 4. The said trustees shall cause a monthly statement to be made, showing the amount due from the Union Pacific railroad company on account of work done or equipment or material furnished under the contract, according to the estimates of the engineer of the Union Pacific railroad company, as provided in said contract, a copy of which statement shall be furnished to the Credit Mobilier of America. And the above transfer and conveyance of said contract is made upon the further trust and condition:-- 1. That in case of death, declination, disability, by reason of sickness or absence from the country for the space of six months, or neglect to fulfil the duties and obligations of said trust for the same time by either of said trustees, the remaining or surviving trustees may declare the place of said trustee to be vacant, and to fill such vacancy by vote in manner aforesaid. 2. That in case any one of said trustees shall wilfully neglect or evade the performance of his duties as such trustee, or shall wilfully attempt to hinder, delay, obstruct, or interfere with the execution or performance of said contract, or the due execution or performance of said trust and conditions, according to the true intent thereof, or shall appropriate to his own use or benefit any money or other valuable thing belonging or appertaining to said trust, fund, or property, he shall not be entitled further to act as such trustee, or to receive any of the benefits of said trusts, either as shareholder in said Credit Mobilier of America, or otherwise. The parties of the second part do hereby accept the said trust, and agree faithfully to execute and perform the same according to the terms, conditions, and limitations herein set forth.