OF MARINE COASTS. 



71 



MONTEREY BAY. 



in its inner part, is lined with a chain of high dunes, which sometimes 

 extend for 1 km. or more. The beach is similar to that south of 

 Golden Gate, but no distinct littoral dune is formed, the dune-complex 

 commencing immediately after the upper beach. Inside of the dune 

 belt usually follow sand fields. 



The Hopkins Laboratory is situated on a rocky point at Pacific 

 Grove, and only small patches of narrow sand beach occur between the 



Dunes covered with a Lupinus community, at Seventeen Mile Drive, Pacific 

 Grove, CaL 



PHOTOGRAPH BY THE AUTHOR. 



bluffs and the ocean in the immediate neighborhood. One kilometer 

 south of the laboratory, at Point Pinos (Pig. 9), sand formations of 

 greater extent again commence. The beach is gravelly or even consist- 

 ing of shingle for a distance until Moss Beach, where it is sandy. 



The recent drift sand has accumulated into small dunes some dis- 

 tance from the shore (Fig. 10), leaving a belt of older consolidated sand 

 bare or covered with a dense carpet of various plants. Further inland 

 the dunes grow in size and finally, about 0.5 km. from the ocean, they 

 reach quite a considerable height. One of these dunes is about 90 m. 

 in height, sloping abruptly on its leeward side to the plain behind. 



