Grimsby August 23-1912, Friday. Left Toronto with Parks at 8 A.M. for Grimsby, Ontario which is 57 miles south of Toronto. We climbed off the Cresta or 'Mountain' by the road back of the 'Village Inn' and up the new by the path on the north side of the run. At the top of the Mountain occurs the Lock- fjord dolomite that passes down into thin folded magnesian limestone just as in the Niagara force. Could not make out the thickness but of lean folded dolomite at least a foot once he seen in the cliff. Then thin folded magnesian limestone without shale cuttings pass into a transition of limestones with some shales as at Niagara. Thickness about 15 feet. Then Rochester shale with thimble of ajjadacene shale limestone refuse and forms. These are the Rochester Shale, etc. as may be seen of Niagara. Thickness about 30 feet. The fauna is identical with that at Niagara Falls and Lockport.