It is probable that the returns have never been accurate in regard to the mixed bloods and Indians, but it is the general conclusion that the Indians have been decreasing in number, while the mixed bloods have been increasing.
Mortality is decreasing, but if we may judge from the physical conditions of the recruits the physique of the nation shows little or no improvement.
The conditions of formation and accumulation of petroleum point to the fact that the principal oil fields of the world are merely reservoirs, which will become exhausted in the course of years, as in the case of the decreasing yield of certain of the American fields.
It is still found in the northern counties of England and North Wales, but in decreasing numbers.
The main series on which we shall rely here are those -- (1) from Assyria (38) about 800 B.C.; (2) from the eastern Delta of Egypt (29) (Defenneh); (3) from western Delta (28) (Naucratis); (4) from Memphis (44) -- all these about the 6th century B.C., and therefore before much interference from the decreasing coin standards; (5) from Cnidus; (6) from Athens; (7) from Corfu; and (8) from Italy (British Museum) (44).