10/11 - Lime glacier with its strong marginal moraine of Potsdam (?) or Medina (?) sandstone. All foregoing taken before sunrise. 10,12 - Grave + group of houses. Motor boat grounded on rocks by accession of tide! Examined shoreline east side of island for 1/4 mile. 39 Got 3 a and made 4 or 5 photos of beach + the shore cliffs. Landed on basaltic columnar pavement of old diabase or diorite Spec. 568 + 569^1-70 are from base- ment rocks of east cliffs near Ootahs topic Spec 571 comprises contact between this old igneous and a sheet of the newer basic trap (diabase?)