EXPLANATION Qf. PMTKS. 



From thp "Outllnf nf Ca)ic- Cod," hy W. M. Davis, In Am. Aca&.''!4it(i iliid^^l., 



Pro«0^yol.Jl, ■■: 1 : 



Fio. I. Stages in the development of the outline of the north end of 



Cape Cod. 

 Fif>. 2. Ideal section showing development of shore profiles on Cape 



Cod. ; • ,:.. -. 



Fio. 3. Map of stages in the gradation of an irregular shore-line, like 



that which Cape Cod formerly possessed. 



