“That is all right,” commented the professor. “Now step inside, please; and close the door—so: when you want to open it from the inside you simply turn this handle—so, and open it comes.”
The quartette now found themselves inside the pilothouse, which proved to be two stories in height. On their right hand they beheld the companion-way leading to the interior of the ship, with a wide flight of stairs of delightfully easy descent, handsomely carpeted, and a magnificent massive handrail and balusters of gleaming aethereum. The square opening to the companion-way was also protected by a similar handrail and balusters, producing an exceedingly rich effect and seeming to promise a corresponding sumptuousness of fitting in the saloons below.
Just clear of the head of the companion staircase and leading up one side of the pilot-house was another light staircase of open grid-work leading to the floor above, which, at a height of seven feet, spanned the building from side to side. This floor was also of light open gridwork, affording easy verbal communication between persons occupying the different stories in the pilot-house. Through this open grid-floor could be seen various apparatus, the objects of which the new-comers were naturally anxious to learn; and to this floor the professor accordingly led his companions up the staircase.
The first object to which he directed attention was a long straight bar of aethereum handsomely moulded into the form of a thick cable, and finished off at the outer end with the semblance of a “Matthew Walker” knot. This bar issued at its inner end from a handsomely panelled and moulded casing which extended down through both floors of the pilot-house, presumably covering in and protecting the mechanism with which the bar was obviously connected.
“This,” said the professor, laying his hand on the bar, “is the steering apparatus—the tiller as you call it—of the ship. It moves, as you see, in all directions, and communicates a corresponding movement to the propeller—as you may see, if you will take the trouble to look out through one of those windows.”
The trio immediately did so, and saw, as the professor had stated, that with every movement of the tiller, right or left, up or down, the propeller inclined itself at a corresponding angle. A handsome binnacle compass stood immediately in front of the tiller, but the professor did not call attention to it, rightly assuming that his companions were fully acquainted with its use and purpose.
On the professor’s right, as he stood at the tiller, was an upright lever working in a quadrant, and communicating, like the tiller—and indeed all the other apparatus—with the interior of the ship.
“This,” said the professor, directing attention to the lever, “is the lever which controls the valves of the main engines. I have fashioned and arranged it exactly like the corresponding lever in a locomotive. Placed vertically, thus, the engines remain motionless. Thrown forward, thus, the engines will turn ahead. And thrown backward, thus, they will turn astern. That is simple enough. And so is this,” directing attention to a dial on his left hand which stood facing him. The dial had a single hand which was obviously intended to travel over a carefully graduated arc of ninety degrees painted on the dial-face, and which, in addition to the graduations, was marked in the proper positions with the words “Stop;” “Quarter speed;” “Half speed;” “Full speed;” and also with two arrows pointing in opposite directions marked “On” and “Off” respectively. Just beneath the dial was a small wheel with a crank-handle projecting from one of its spokes, and on this crank-handle the professor now laid his hand.
“This,” he said, “regulates the valve which admits vapour into the engine; and the dial-hand shows the extent to which the valve is opened. Turn the wheel in the direction of the arrow marked ‘On’—thus, and you admit vapour into the engine. You will observe that, as I turn the wheel, the hand on the dial travels over the arc and indicates the extent to which the valve is open. There; now it is fully open, and the cylinders are full of vapour.” Then he quickly reversed the wheel and sent the index hand back to “Stop,” keeping a wary eye on his companions as he did so.
“These are dangerous things to meddle with,” he remarked apologetically. “The engines are of one hundred thousand horse-power; and, full as the ship now is of air at the atmospheric pressure, they would drive her irresistibly along the ground and through all obstacles. I must beg that none of you will meddle with the machinery until you are fully acquainted with its tremendous power.”