Rotary steam-pumps, [140].

Round vertical shafts, [74].

Runs of value, [8].

test-treatment, [3].

Safety, factor of, in calculating averages of samples, [12].

Sample, assay of, [7].

average value, [9].

narrow, diluting to a stoping width, [11].

sections, [5], [6].

taking, physical details, [6].