414 



F. P. GULLIVER — CUSPATE 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 



^■: 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. 



LAG 00 N- MA RSII S TA G E. 



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. 



