on second-hand data, [52].
Value, average, of samples, [9].
discrepancy between estimated and actual, [12].
distribution, [31].
of extension in depth, estimating, [22].
positive, of metal mine, [1].
present, of an annual dividend, [46].
of $1 or £1, payable in — years, [47].
runs of, [8].
speculative, of metal mine, [1].