Part, chapter

1    2,    8|    river showed sufficient slope, it was perhaps possible
2    2,    8| bottom of the river, whose slope was then carefully examined.~
3    2,   10| noticed, however, that the slope of the river bed was very
4    2,   10|    of Frias, for there the slope had perhaps stopped the
5    2,   10| sort of hole formed in the slope of the bed, to the bottom