the extremes is always equal to the product of the means This is called the rule of proportion. By means of this rule, we may always find any one term of a proportion when the other three are known. aFor, if one of the means be wanting, weanbsp;...
|Title||:||The School and the Schoolmaster: a Manual for the Use of Teachers, Employers, Trustees, Inspectors, Etc. of Common Schools. In Two Parts. Part 1 by A. Potter; Part 2 by G. B. Emerson|