. Bulletin of the Geological Society of America. Geology. 414 F. P. GULLIVERâCUSPATE FORELANDS. which ap])ai'ently has hardly begun to fill. The form of this bar is wliat Mr Gilbert has called V-shaped. '^ Various examples on the east coast of Port Discovery (C. S., 648) show V-shaped bars inclosing lagoons. The greater number of forelands in ^â : this bay have their greater extension alongshore. Beck- ett point, however, has its length normally at right angles to the shoreline. At point Monroe, near Port IMadison, Washington (C. S., 663), a looi)ed bar in- closes a lagoon somewhat similar to
. Bulletin of the Geological Society of America. Geology. 414 F. P. GULLIVERâCUSPATE FORELANDS. which ap])ai'ently has hardly begun to fill. The form of this bar is wliat Mr Gilbert has called V-shaped. '^ Various examples on the east coast of Port Discovery (C. S., 648) show V-shaped bars inclosing lagoons. The greater number of forelands in ^â : this bay have their greater extension alongshore. Beck- ett point, however, has its length normally at right angles to the shoreline. At point Monroe, near Port IMadison, Washington (C. S., 663), a looi)ed bar in- closes a lagoon somewhat similar to those just men- tioned (figure 8). Tlie shore drift is here all from the left, and the curve of the bar is convex seaward. At point Jefierson, furtlier north, on the same slieet there is an- other convex bar inclosing a lagoon where the drift has been from the left, as shown These two examples. Kilometres. I'~IGUKE S. - / '-/)(/; Slagr. \)y the continuation of the clilf curve in the bar do not give tlie typical cuspate form. LAG00N-MARSII STAGE. Various stages of lagoon filling are shown on tlie Port Townsend sheet (C. S., 647; last edition, 6405). Walan point foreland has considerable area of lagoon and still maintains open connection with Port Townsend. At point Hudson there remains an unfilled lagoon but its connection with the sea is lost. At point Wilson a small lagoon now exists, while at Kala point the lagoon is practically converted into a marsh. On the foreland at Marrowstone point the sand dunes have almost obliterated the marsh. On this same Port Townsend sheet the rounding of the point of the cusp may be studied. At Port Wilson the concave curves intersect in a slightly rounded cusp, while at Kala point the cusp is more blunt, and Walan point is decidedly rounded. The curves at point Hudson have a long radius so the sides of the cusp are nearly straight, and since they meet nearly at right angles, the foreland has a broad, flattened appear- *Loc. cit., pp. 57, 58.
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