accomplished the work of producing a very per- ronage and facilities are very superior ; and for them, even, through a less expanse of vapor; and at any hour, the higher fect valve. The following letters will fully explain its con- this device may be found advantageous. the dew-point, the more… … the latter being thrown in to length, the hollow auger LEFEBER’S SPOKE TENONING MACHINE. gear by worm wheel, and by seen in Figs. 2 and 3, which this means the valve may be started with facility whatever the same dark lines. By this means the influence of foreign at- is secured in the end of the…
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