d: permit a change at will of the length of the throw, and the " The logical utility of mathematics is not less obvious. travel of the valve by means of the eccentric, instead of ef- The prevelent distaste for mathematics, coexisting, as it does, fecting it through a, link or any other daaace… … must ever remain one of its most indispensable implements. Once inured to the habit of accurately imagining abstract re- It may b» considered as an eccentric with'n an eccentric lations, recognizing the true value of symbolic conceptions, the two eccentrics A and B in the engraving being locked and…
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