Williams's lode heaves the cross-course 4 feet towards the left-hand; the cross-course then intersects Trathan's lode, and at some levels heaves it towards the right-hand; and lastly, it heaves the Black lode 11 feet towards the left-hand.
Source: wiktionary
In this end the main part of the lode is probably missed, but the branch on which it is driving has a rather silver character; and as the cross-course is approached, it is not improbably that the silver may be met with here.
Source: wiktionary
The north section of the mine has also a crossback or cross-course, but the result at the crossing is so completely reversed that one is struck with astonishment to see the opposites in the same formation.
Source: wiktionary