Fig. 2. Sketch of two uf the branches at thy head of Scripps Canyon, showing the vertical 

 walls and the sand chutes. (Drawn by J. R. Moriarty from preliminary sketches by 

 Earl Murray.) 



Fig. 3. Photograph by R. F. Dill of the U.S. Navy Electronics Laboratory showing the 

 overhanging walls, the terraces, and the encrusting organisms near the head of Scripps 

 Canyon. (Oflficial U.S. Navy photograph.) 



17 — s. in 



