Fredford, July 28-1912, Sunday. Did not go out on geologic Friday. Looked up the geologic maps of Grand Manitowlin of 1897. Sheet no 125, 126, see Ann. Rep. Part I of vol. IX (new series) by P. Reel. His generalised section is as follows:--All dip S. about 40 feet to the mile. ? Limestone on N. end of Fitzwilliam Isl. and S.-E. end of Manitowlin, Crasse, springy peg and tuff dolomites. Niagara. Thick & then redder, dark and peg and tuff dol. Clinton. Gray, tuff and purplish arg., li. about 100 feet, followed by red sands at top but only 27 feet thick = "Iron Ore band" Medina. Branting. Hudson River. Blue-gray and dark sands and shales with thin li. and S. At top 30 to 40 feet of gray li. Utica. Black bituminous shale 60 " Trenton--Blueed River, gray li with shale and snails beds. ? Chazy. Chocolate sands with some fine sandstones Total 1412 "