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THE COFFEE PLANTATION

of order. While they were not heavy, they moved back and forth horizontally at great speed and took an enormous amount of motive power. The belts were always being changed, and I remember the fruitless efforts of all of us to remedy the mechanical defects of the device.

Now is it not curious that those troublesome shifting sieves were the only machines at the coffee works that were not rotary? They were not rotary, and they were bad. I think this put me as a boy against all agitating devices in mechanics and in favour of the more easily-handled and more serviceable rotary movement.

It may be that half-a-century from now man will assume mastery of the air by means of flying machines heavier than the medium in which they move. I look forward to the time with hope, and at the present moment I have gone further to meet it than any other, because my own air-ships (which have been so reproached on this head) are slightly heavier than the air. But I am prejudiced enough to think that when the time comes the conquering device will not be flapping wings or any substitute of an agitating nature.

I cannot say at what age I made my first kites, but I remember how my comrades used to tease

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