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 times for severe in-door or out-door life; for the quiet plodding at the desk; or the stormy days and nights of the ocean or the bivouac. Who is going to do better brain-work: he whose brain is steadily fed with vigorous, rich blood, made by machinery kept constantly in excellent order; never cramped; aided daily by judicious and vigorous exercise; tending directly to rest and build him up? or he who overworks his brain; gets it once clogged with blood; and for many hours of the day, keeps it clogged; who does nothing to draw the blood out of his brain for a while; and put more of it in the muscles; who, perhaps, in the very midst of his work, rushes out, dashes down a full meal; and hurries back to work; and at once sets his brain to doing wellnigh its utmost?

Well, but is not the work which will effect such swift changes very severe, and so a hazardous one to attempt? That is just what it is not. Is there anything very formidable in wooden dumb~bells weighing only two and a half pounds each, or clubs of three and a half pounds, or pulley-weights of from ten to fifteen pounds? or is any great danger likely to result from their use? And yet they were Sargent's weapons with his two hundred. Nothing in Maclaren's work, so far as he points out what it is, is nearly so dangerous as a sudden run to boat or train; taken by one all out of the way of running; perhaps who has never learned. There a heart, unused to swift work, is suddenly forced to beat at a tremendous rate; lungs, ordinarily half-used, are strained to their utmost; and all without one jot of preparation.

But here, by the most careful and judicious system; the result of long study and much practical application;