"Chief says, clean Number Four smoke-boxes fore and aft yoore watch, an' ta trimmers to tak' nowt fra' th' thwart-ship boonkers." Then he swings away, climbing the stairs with one eye on the engine. A goodly youth, such as we admire; a magnificent young animal with possibilities. And then the firemen. I stand under the ventilator--it is cooler--and I watch them toil. Think well upon it, my friend. These were men doing this while you were at your German University, while you were travelling over Europe and storing your mind with the best of all times. They are doing it now, will do it while you are at your work at the Institute. They have their business in the great waters. That little man there, with two fingers of his left hand gone, is Joe, a Welshman from his beloved Abertawe. Beyond him, again, the huge gaunt frame and battered deep-sea cap, the draggled military moustache surmounted by high cheek-bones, the long, thin, sinewy arms tattooed with French dancing-girls--where shall our knowledge of the nations place him? That is Androwsky, from Novorossisk, in South Russia. A vast, silent man, uttering but three or four words a day. His story? I cannot tell it, for he never speaks. In my poor way I have tried to get it in German, but it is no good. In the meantime he is almost the best fireman in the ship. Indeed, all my men are good. Scarcely ever do we have less than full steam at the end of the watch. And now, my engines! To the uninitiated it is, I suppose, a tiresome, bewildering uproar. And yet every component, every note of this great harmony, has a special meaning for the engineer; moreover, the smallest dissonance is detected at once, even though he be almost ready to doze. So finely attuned to the music does the ear become that the dropping of a hammer in the stokehold, the rattling of a chain on deck, the rocking of a barrel in the stores, makes one jump. It is the same with the eye. It is even the same with the hand. We can tell in an instant if a bearing has warmed ever so slightly beyond its legitimate temperature. And so it is difficult to know "who is the potter and who the pot." The man and the machine are inextricably associated, and their reflex actions, one upon the other, are infinite. It is this extraordinary intimacy, this ceaseless vigilance and proximity, that gives the marine engineer such a pull over all others where endurance and resource accompany responsibility. In all big power-stations you will find many men with long sea service in charge of the engines.