"This contract includes the graduation, tunneling, masonry and bridging, superstructure, fencing, depot buildings, switches, turn-tables, water and fixtures, and in fine all labor and materials necessary for the construction of the road are included in this contract." The right of way to be provided and paid for by the railroad company. The work to be completed and finished in the best manner, for which the Troy and Greenfield Railroad Company agreed to pay H. Haupt & Co., "the sum of three millions eight hundred and eighty-three thousand dollars in manner following, to wit: Two millions of dollars in the bonds of the State of Massachusetts, to be issued under the Act by which the credit of the said State is loaned to said corporation, nine hundred thousand dollars in the six per cent. mortgage bonds of said company, five hundred and ninety-eight thousand dollars in the capital stock of said Troy and Greenfield Railroad Company, and three hundred and eighty-two thousand dollars in cash." The work of constructing and completing the road was to be done in compliance with the loan Act of April, 1854. One hundred and fifty thousand dollars to be expended by the contractors in depot buildings and necessary rolling stock, cars, engines, &c. under the direction of the board of directors. The stock subscription of E. W. Serrell and of Serrell & Co., amounting to five thousand nine hundred and eighty-seven shares, was to be transferred and assumed by Haupt & Co., payable in compliance with said Loan Act with the understanding that the assessments on the stock were to be paid by the performance of this contract in stock credits as provided in the contract, and the stock taken by the contractors at par. This contract further provided, that on the receipt of the several installments of State bonds, the contractors should pay to the sinking fund the ten per cent. specified in the Loan Act, in consideration of which Haupt & Co. should retain whatever sums was realized from the exchange and premium on the bonds. The payments were to be made monthly, on estimate of the company's engineer. The cost of the materials and work upon the line, exclusive of the Hoosac Tunnel and its approaches, was assumed to be one million eight hundred and eighty thousand dollars, and the estimates were to be made in the relative proportion that the part done bore "to the whole amount of materials and work to be furnished, and done at the price named." The Hoosac Tunnel and its approaches were estimated at two million dollars for a double track, and the monthly estimates were to be in proportion to the amount of work done on the approaches, and the length of tunnel excavated.