It is well known to mineralogists, that Giesecke, who in the years 1806—13 travelled in Greenland, brought home from Julianehaab district some new minerals, which he handed over to the Copenhagen Museums. In 1853-4 Dr. Rink supplied the museum of the Copenhagen University with a large collection of the same minerals, mostly in large and fine specimens, and the same collections hove lately received a most valuable and considerable addition, through the travels of Mr. K. J. V. Steanstrup of the Danish Geological Survey of Greenland. Some of these interesting mino.rals, occurring in the Syenite on both sides of the fjords Tunugdliarfik and Kangerdluarsuk, have already long been known, whereas others had elther been not found there before or at least not analysed or described.

While agreeing with those writers who affirm that many of the members of this series are of the nature of schists, —sometimes almost flaggy schists, still, even when examined throughout their multitudinous varieties, it has to be affirmed that they are all gneissic schists; and, however fissile some of. these members may be, this is far from a sumcient reason for attempting to dispense with a time-honoured appellation;—one moreover which is more fittingly applied to them, than to the somewhat more generally hornblendic rock to which alone it has been proposed to confine its use.