16 Falls Point. To the west of the section including 5-33, A-5-10, etc., on the south-west side of Falls Pt., there is a covered crop about 125 yards wide, when there appear first of dark bluish thin splintery shale striking N.45° W. and dipping to the W. at about 45°. These shales vary as a 5 inch thick glossy flaggy clay, and descending in the section to the west we come to a thick series of massive tuffa striking N.45° W. and dip giving 45° to the N.E., and including a total of about 125 yards. These tuffs from the shore line for nearly half a mile on the south-west side of Falls Point. Specimens are 115-9, 1157, 1160, etc. The rock may be called a feldspar porphyry or breccia. The magma is a light gray glassy pelysate containing an abundance of feldspar phenocrysts the rock resembling white granite except in the occurrence of pelysate fragments and in places small pieces of black slate scales, also large rounded lumps of tumba a foot thick. In several places along the 3rd of a mile entered on the south-west side of Falls Point, there are masses of flinch black shale from 2 to 6 feet thick and several rods in extent, apparently entirely included in the tuffa. These shales are also crumpled and successively rolled and slickensided on the outer portions, suggesting that they were not contemporaneous deposits but initial large horres included in the tuffa, perhaps while still clay (crenant slithering). No patch of shale is over 2 yards thick and no bedding planes are discernible. Fossils extremely scarce hardly recognizable = 5-32, A, including a small Crocodonta occasional, Chorofor cornuta (small coarse striate) rare, D.Hoceras rare. About 100 yards north-west of the main mass of the white granitoid tuffa and still in the tuffa, there occur some fossiliferous tuffa bearing a very interesting fauna. The tuffa for one foot are very fossiliferous with blue pelysate glassed with many beds full of Wisconsin. This rocks includes a couple of thin seams of coarser tuffa with fragments the age of Gen three fossiliferous beds strike N.31° W. and dip N.E. at an angle of 38°. The point of outcrop bears E.20° S. from a little land laid island bearing a couple of pine trees half a mile N.W. of the tip of Falls Point. The fauna is 5-22, A and includes Wilsonia abundant Cammarochea Dalmacella (2 sp.) ?Schizophoria Strophonella Actinopterella Grammysioid Myolind Pferinta danbvi Horiosoma Neurotomaria (very large, of Horiosoma) Orthoceras myrice Calymene - Pterocheras sp. Dalmantus # This may be taken as probably the average dip of the tuffa series on the S.W. side of Falls Point, which with minimum width of 100yds would give 405 feet thickness in the tuff series. The real thickness may be decidedly greater. 17 Three fossiliferous tuffa dips under about 6 feet of gray coarse grained tuffa, then follows 2 feet of purple coarsegrained tuffa, then several feet of the granite-like feldspathic tuffa. The fossiliferous tuffa are underlain by a series of coarse tuffa and about 150 yards to the S.E. within the exposures of the main mass of white granite like tuffa extending for a third of a mile to Falls Point. The fossiliferous tuffa never therefore coming on horizon near the top of the tuff series, and ought to appear on the S.E. side of Falls Point.