ith chemical re- sured. Though popularly described as "oval," the shape an oval. This development is the outcome of modern searches. Unhappily, exact apparatus for measuring is in reality "arc-oval," its form being clearly demon- exigencies, more especially owing to the perfection of strated in the… … which is raised by the mercury communicates its at the same time playing for safety is impracticable, movement through a thread rolled around a conve- and repeat strokes are reduced to a minimum. THE WEW HENRT DYNAMOMETER. nient reduction pulley (1-6) to a pen, which traces At the same time,…
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