"Under these influences, operating in favor of the contractor and to the prejudice of the State, a system of fraudulent estimates and measurements has become so established that though in direct and flagrant violation of the very language of the contract, it is deliberately defended by those who profit by it, on the ground that it has been sanctioned by long usage. For example: it has been a practice of the engineers to allow the contractor for excavating behind vertical wall, on a slope of one to one, without regard to the necessity for such excavation, and whether the excavation was made or not.
"As nearly all vertical wall is constructed in the winter or early spring, and when the banks are frozen, the cut is usually vertical or nearly so, and any charge for such excavation is a fraud upon the State. The contracts also uniformly provide that the contractor shall be allowed nothing for the filling in of the place supposed to be excavated behind the walls, if such filling is from earth already paid for as excavation, unless he is obliged to draw his material more than 200 feet on the line of the canal. This provision has also come to be treated as obsolete, and the State seems to have been uniformly charged not only for excavation which had not been made, but for filling up the assumed excavation which, had it been made, the State was not bound to pay for. The profits derived in this indirect way through the fraudulent connivance of the agents of the State, has led to an enormous expenditure for works wholly unnecessary, and which to keep in repair must continue to subject the State to a very considerable yearly expense.
"One of the principal expenditures upon the canals since 1868 for extraordinary repairs has been made in the construction of vertical and slope walls which have been, as we think, very unwisely substituted for the old walls, the capacity of the canals before their removal having been ample for all their business.
"Between the 1st of January, 1868, and the 1st of July, 1875, there have been built forty-three and one-third miles, linear measure, of vertical wall, at a total cost, including the removal of bench walls which they displaced, of $1,589,885, the cost per linear foot averaging $6.95.