Scarcely in any case has the meteoric origin of any iron been more doubtful than that of the Greenland masses found by Professor Nordenskjòld in 1870, for although they contain about 2 per cent. of nickel, and, when etched, show the Widmanstätt’s figures, the fact that iron is imbedded in the basalt, on which the so-called meteorites were lying, bespeaks that the loose masses of iron originally belonged to the basalt.

“The Blue Rocks” (Danish, Blaafjeld, Greenland, Ovifak), on the southern coast of Disko, where the iron was found, are about 1800 feet high; the foot up to 600 or 700 feet is covered by loose stones forming a slant of 30 or 40° above which, in the almost perpendicular rock, 13 or 14 horizontal seams of trap are seen.