Examine ledges of Jacksonburg limestone in fields to right, between the Martinsburg shale and the Kittatinny lime- stone. Top of Kittatinny is Beekmantown age. Jacksonburg limestone is Black River-Lowville. Base of Jacksonburg locally contains conglomerate of Kittatinny pebbles. Return to Monroe, turn left. After crossing railroad note lobate front of a high glacial delta at North Church,- best marked east of road. Edge of ice sheet lay against north side of delta. Note huge kames to northeast. Turn south at Hamburg to Franklin. Note very large kames on right, 1 mile south of Hamburg and south of these the east front of the North Church delta. Arrive Franklin 10:30. 10:30 A. M. - 12 M. Trip through the Separation plant of the New Jersey Zinc Company. A visit underground cannot be arranged for. 12 M - 1:30 P. M. Lunch. 1:30 - 3 P. M. Inspection of surface geology including outcrop of ore body, open cut, contacts of basal Cambrian (Hardystonville quartzite) on gneiss. 3 P. M. Leave Franklin for Dover via Ogdensburg, Sparta, and Woodport. At Ogdensburg note great V-shaped embankment of stratified glacial drift which for a time dammed the Wallkill Valley. On the right across the valley are (1) a white limestone crushing plant and (2) the Ogdensburg works of the New Jersey Zinc Company. Wallkill Valley is underlain by a syncline of Kittatinny limestone, the western half cut off by a fault which has brought the gneiss and slivers of pre-Cambrian limestone to the surface on the west. At Sparta, road ascends to level of the Schooley Mountain peneplain, here much dis- sected. At Woodport there is seen the north end of Lake Hopatcong- Area 4 square miles- partly artificial,- level having been raised 8 feet in 1831. At Hurdtown- magnetic iron-ore mine, 6000 feet long on a shoot of ore pitching 26° north, which was 60 to 90 ft. high and 35 feet thick. Two and one-half miles south of Hurdtown,- cross the Longwood Valley on Devonian shale, faulted down against gneiss on west. Three miles,- Green Pond Mt.-Silurian S. S. and cg. resting on gneiss or Cambrian limestone. -5-