Note 25 — Chapter XXVII
Reading edition
Above Dutch Flat, the maximum grade of 116 feet per mile has been resorted to, for over ten miles. From Owl Gap to the Summit, a distance of twenty-four and a half miles, the average grade is 81, and the maximum 85 feet per mile. From the Summit to the Truckee, the average is 84, and the maximum 90 feet per mile; but down the Truckee, the grades average less than 40 feet per mile.