SECT. 2] UNDEBWATER PHOTOGRAPHY 479 



bottles, corers and drags. The winch and cable design must meet the require- 

 ments of all these other duties. 



There are times when a single lowering can accomplish several purposes. For 

 example, the camera can be used as a bottom weight on a string of Nansen 

 bottles. The sonar on the camera can be used to hold the camera at a required 

 distance above the bottom and thus indicate to the crew on the deck the time 

 to drop the weight messenger that operates the bottles. During the entire 

 operation, the camera is recording both mid-water and bottom scenes. 



References 



Breslau, L. P. and H. E. Edgerton, 1958. The luminescence camera. Woods Hole Oceanog. 



Inst. Ref. 58-14; also in J. Biol. Phofog. Assoc, 26, No. 2, May, 1958. 

 Breslau, L. P. and H. E. Edgerton, 1958a. Interruption cannera. Woods Hole Oceanog. 



Inst. Ref. 58-27. 

 Cousteau, J.-Y., 1958. Calypso explores an vmdersea canyon. Nat. Geog. Mag., 113, 



373-396. 

 Edgerton, H. E., 1955. Photographing the sea's dark vmderworld. Nat. Geog. Mag., 



107, 523-537. 

 Edgerton, H. E., J.-Y. Cousteau, J. B. Brown and R. H. Hartman, 1957. Nylon rope for 



deep-sea instrumentation. Deep-Sea Bes., 4, 287. 

 Edgerton, H. E. and L. D. Hoadley, 1955. Cameras and lights for underwater use. J. Soc. 



Motion Pict. and Television Eng., 64, 345-350. 

 Edgerton, H. E. and R. E. Hopkins, 1961. Lenses for imderwater photography. Deep-Sea 



Res., 8, 312-317. 

 Ewing, M., A. Vine and J. L. Worzel, 1946. Photography of the ocean bottom. J. Opt. 



Soc. Amer., 36, 307-321. [Contains an extensive historical bibliography.] 

 Houot, G. S., 1958. Four years of diving to the bottom of the sea. Nat. Geog. Mag., 113, 



715-731. 

 Houot, G. S., 1960. Deep diving by bathyscaphe off Japan. Nat. Geog. Mag., 117, 138-150. 

 Johnson, H. R., R. H. Backus, J. B. Hersey and D. M. Owen, 1956. Suspended echo- 

 sounder and camera studies of mid -water sound scatterers. Deep-Sea Res., 3, 266. 

 Laughton, A. S., 1957. A new deep-.sea underwater camera. Deep-Sea Res., 4, 120-125. 

 Laughton, A. S., 1959. Photography of the ocean floor. Endeai^our, 18, 178-185. 

 Owen, D. M., 1951. Deep-sea vmderwater photography and some recent stereoscopic 



applications. PJwtogrammetric Eng., 17, 13-19. 

 Shipek, C. J., 1957. NEL Type III deep-sea camera. U.S. Navy Electronics Lab. Rep. 



No. 768. 

 Shipek, C. J., 1960. A photographic study of some deep-sea floor environments in the 



eastern Pacific. Bnll. Geol. Soc. Amer., 71, 1067-1074. 

 Thomdike, E. N., 1959. Deep-sea cameras of the Lament Observatory. Deep-Sea Res., 5, 



234-237. 



