Final Report of JOHN A. ROEBLING, Civil Engineer on the Niagara Railway Suspension-Bridge, May, 1855.]
[Footnote 2: Lest these statements should sound extravagant, the reader will please reckon up the amounts for himself. A bank twenty-five feet wide on top, eight hundred feet long, and two hundred and thirty feet high, would contain two million cubic yards of earth; which, at twenty-five cents per yard, would cost half a million of dollars, exclusive of a culvert to pass the river, of sixty, eighty, or one hundred feet span and seven hundred feet long. Twenty trains per day, of thirty cars each, one car holding two yards, would be twelve hundred yards per day; two million, divided by twelve hundred, gives 1,666 days.]
[Footnote 3: The most careless observer has doubtless noticed that the front part of a locomotive rests upon the centre of a track, having four small wheels; the back and middle part, he will also remember, is borne upon large spoke wheels,—which are connected with the machinery; upon the size of these last depend the power and speed of the engine. The larger the wheels, the less the power, and the higher the velocity which may be got; again, the wheel remaining of the same size, by enlarging the dimensions of the cylinders the power is increased; and the wheels and cylinders remaining the same, by enlarging the boiler we can make stronger steam and thus increase the power. There may be seen upon the road from Boston to Springfield engines with wheels nearly seven feet in diameter, used for drawing light express-trains; while upon the roads ascending the Alleghanies may be seen wheels of only three and a half feet diameter, which are employed in drawing trains up the steep grades. Increase of steepness of grades acts upon the locomotive in the same manner as increase of actual load; as upon a level the natural tendency of the engine is to stand still, while on an incline the tendency is to roll backwards down-hill.]
* * * * *
HER GRACE, THE DRUMMER'S DAUGHTER.
[Concluded.]
The girl whose suggestion had brought about this change in her father's household, introducing anxiety and tears and pain where these were almost strangers, was not exceeding joyous in view of what she had done. But she was resolved and calm. It was everything to her, that night when she lay down to rest, to know that the same roof that covered her was also spread above the prisoner, and all the joys of youth passed into forgetfulness as she thought and vowed to herself concerning the future.
It seemed, perhaps, a state of things involving no consequences, this sympathy that Elizabeth had shared with the gardener Sandy, when the prisoner's eyes gazed on them from his window, or turned towards them while he walked in the garden; but Sandy said to himself, when she told him that they were to have Laval's place in the prison, "It took her!"—neither did it seem incredible to him when she assured him that the new house was like home. He honestly believed that with the child—child he considered her—all things were possible.
What he had lacked and missed so long that the restoration had a charm of novelty about it, added to its own excellency, was now the prisoner's portion. Good manners, kind and courteous voices, greeted eyes and ears once more. As in the days of Joan Laval, a woman was now sometimes in attendance on the prisoner. But in not one particular did Pauline Montier resemble Joan Laval. She called herself a soldier's wife, and was exact and brave accordingly. She was thoughtful of her husband's charge, and when she paused in her efforts for his comfort and content, it was because she had exhausted the means within her reach, but not her wit in devising.
The effect was soon manifest. The prisoner received this care and sympathy as he might have received the ministration of angels. The attendance was almost entirely confined to Montier and his wife, but now and then Elizabeth also could serve him. She served him with her heart, with unobtrusive zeal that was exhaustless as the zeal of love. Unobserved, she watched, as well as waited on him; and oh, how jealous and impatient of time and authority did she become! Her pity knew no limit; it beamed from her eyes, spoke through her voice, was unceasing in activity. He was to her a romance terrible and sweet, a romance that had more abundant fascination than the world could show beside.