tion. counterbalanced frame, which turns loosely on the One of the simplest of barometers isa spider’s web. crank arm shaft. The intermediate gear wheel meshes AN IMPROVED GOVERNOR. When there is a prospect of rain or wind, the spider into an interna] gear on the large transmitting wheel, A… … the trace chain slack, and‘ then, without moving their the rod being raised by and falling with the govern- feet, throw their shoulders forward, when their weight ing screw, and carrying a weight on its upper end portion of its rim, or by the gear on one outer edge, starts the car. They also learn…
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