At all events, two quite distinct views seem to underlie the opening books of the Old Testament.
Others maintain that at any rate two sources underlie Acts i.-xii., or even i.-xv.
Nino's story reads like that of such a female missionary, and something similar must underlie the story of her Armenian companions.
In the river-beds, however, and at some distance from the sea, older strata and eruptive rocks underlie the alluvium.
We shall first give the general principles which underlie the methods for the dry extraction of copper, and then proceed to a more detailed discussion of the plant used.