462 



LAUGHTOX 



[chap. 18 



Fig. 31. 37° 55'N, 25° 58'W. Depth 1785 m. Mid- Atlantic Ridge west of San Miguel, 

 Azores. Area of picture H by 2i m. (Photo by L.G.O.) 



Line of burrows of unknown origin in calcareous clay. Note the tracks, typical of 

 those made by scaphopod-like animals. 



Fig. 32. 38° 20'N, 28° Ol'W. Depth 1580 m. Mid-Atlantic Ridge near Pico, Azores. Area 

 of picture I}, by 2\ m. (Photo by L.G.O.) 



Soft clay bottoin showing ring of burrows (usually six) in lower right, and tracks of 

 scaphopod-like animals, one of which can just be seen at the end of a track (top centre). 



