Answers to Correspondents

G. B. Mc Keown (Draperstown).–Professor Cole, F.G.S, of Royal College of Science, reports:–“The rocks are almost certainly from one of the ‘felstone’ dykes of Devonian age that are common in the North of Ireland, with a fairly uniform northerly trend. The compact pinkish ground contains abundant well-shaped crystals of hornblende. It might possibly be from a junction of one of the older granitoid rocks with a hornblende schist. The exact locality would be required if I am to say anything more about it.” We will send the minerals for examination and will report in due course. If you care to give locality it would assist greatly and, I think, would hardly affect your interests.