Part, §

1 Exp    |         h.h. The great beam, 30 feet long, made of 6 pine-balks,
2   I,  7|      means of this table, if 30 inches of mercury is divided
3  II, 20| machine has to draw water is 30 klafter or 180 feet;~ ~"
4  II, 21|    and the depth of the mine 30 klafter or fathoms, the
5 III, 30|                              30.~ ~In the very capital itself,
6 III, 30|   one cylinder, 21/2 feet or 30 inches in diameter and 9
7 III, 35|      an hour from a depth of 30 fathoms, when only half
8 III, 35|     12 nine inch pumps, each 30 feet high, is only 13500
9 III, 41|  have already mentioned in § 30; so that they could never