Friday, Aug. 9, 1907. Cobocook Falls. (Sketch see page 73) Falls/4th. At the south end of the large penin- sula well beyond Long Cove and Long Cove there occur on the mainland side of Cobocook Falls a large mass of gabbro which forms the backbone of the west face of the peninsula. A hundred yards west of Cobocook Falls occurs a little series of exposures of shale and rhyolite dust flaps. The lowest beds exposed include 6 feet of fine indurated shale, massive undulated and with network cracks devel- opcd in places. The beds strike N. 22° W. and dip at an angle of 43°, N. 63° E. Fossils are occasional in the blue shales where occasionally a little Lingula (rare), Orbiculoidea outside, Pseudomonticulata, crumpled joints, small mont-type? trilobites. A couple of feet of lead seams contain great numbers of fossils chiefly Lepidocora rhomboidalis. The future fauna of the shales and dust (Rhyolite dust) seems to be: (5:33-1 a) Lingula (small) rare Orbiculoidea Dalmanella common ?Rhpidomella occasional Lepidocora rhomboidalis abundant in seams Camarotochoa 2 spp. common Wilsonia or Urinulus occasional in seams Spirifer of cyclopterus rare 5" crispus occasional Atrypa reticularis numerous leptostoma Tentaculites occasional in shales Actinoptera sp. occasional Lamellibranchs (miscellaneous) Calymene Dalmanites rare small Monotropa (?) occasional. about 5:33/1 a there is a covered interval of stratigraphically 8 feet, probably filled by thin grey papery shales a few miles of which crop out right above it. Section on Falls Point for about 125 yds just west of Cobocook Falls High Folds a. 8 feet indurated blue shale b. 3 feet undulated thin shale c. 14 feet thin grey shaled D. 3 feet indurated blue shale with 10" rhyolite dust flap at top E. 3 feet olive gray thin shales. F. 2 feet rhyolite-dust-flap glass light blue 5:33- B mudshale, three feet of this shale similar to A but without very hard seams. Fossils: Chonetes between C nova scotica Hall & C jersey- cites Weller (more coarse strata than densy); possibly equals densys, distorted by pressure. common Dalmanella common Stenoschisma Hyatella (?) Meristote rare Actinoptarella rare Aeronitella Cimoid joints common 5:33-1 C. 14 feet of thin, nearly papery grey shales mostly covered the edges mopping out through the shrubage. Fossils are occasional, not within a couple of feet half way to final seams which as a trifle consist. Chonetes (same as in 1 B). Stenoschisma Dalmanella Calymene. 5:33-1 D. Three feet of this indurated shale similar to A and B with at the top a couple of clay (rhyolite) composed of a mixture of thin shale and blue glossy flayolite dust. Fossils which appear last are doubt.