DREDGING AND HYDROGRAPHIC RECORDS. 

 Francisco Bay, Calif., 1912-13, and March, 1914. 



21 



Temperature. 



Salinity. 



Surf. 



Botm. 



-Apparatus. 



Trial. 



Depth. 



Dura- 

 tion. 



Drift. 



Remarks 



57 



57 



68 



51.83 



50.83 



50.83 



49.83 



52.83 



53.13 



Ag.; 19" dr 

 ..do 



.do. 



botm. 

 ..do.. 



..do.. 



52.93 



52.93 



55 ;51.S3 



51.83 



50 



55 

 55 

 56 

 56 



57 



56 



56 



57.5 



5S 



51.83 



54.23 

 53.83 

 53.83 

 54.03 



53.83 

 53.83 

 53.73 

 53.73 

 53.73 



53.93 

 53.93 

 53.93 

 55.73 



53.83 

 53.73 

 53.83 

 53.73 

 53.53 



29.10 

 29.53 

 27.59 

 26.49 



26.96 

 26.10 

 23.91 

 18.23 

 17.47 



30.48 

 31.01 

 20.10 

 28.40 



28.40 

 26.32 

 25.39 

 22.76 

 21.74 



9' Tnr.: 10" dr. 



9' Ag.: 19" dr.. 



5' Tnr.; 19" dr. 

 #12. 



do 



..do. 



.do.... 



Min. 



18 



16i 



15\ 



.do. 

 .do. 



.do. 



9'Ag.; 19" dr. 

 S12. 



5' Tnr.; 19" dr. 



#12. 



Sigs. bot.;#12; 

 #20; Tnr. cse. 



do 



do 



Sigs. bot.; Tnr. 

 c^e.; #12. 



do 



do 



do 



do 



do 



..do.... 

 ...do.... 

 .do.... 



surf.and 

 botm. 



...do.... 



...do.... 



.do.... 



.do.... 

 -do.... 

 .do.... 

 .do.... 

 -do.... 



327° 

 3.58° 



353° 



117° 

 2°.. 



13J 



10 

 10 

 10 

 10 



10 

 10 

 10 

 10 

 10 



331° 



338° 



212° 



Against 

 tide. 



...do 



...do 



...do , 



...do , 



...do 



...do 



do 



do 



Bridle stops parted, 

 frame tnppod, and 

 net torn. 



Net carried away. 



Trawl contained 

 chiefly .shells, few 

 fair-.sized stones in 

 trawl; dr. did not 

 drag properly. 



One bridle stop had 

 parted; on hoisting 

 inboard net parted 

 close to frame; 

 frame was bent, 

 boom likewise. 



Accumulator regis- 

 tered nearly 7 tons; 

 net gave way on 

 haul in; was be- 

 yond redemption. 



Mud filled with worm 

 tubes and ophiu- 

 rians. 



Fewer worm tubes 

 than preceding; 

 few, if any, ophiu- 

 rians. No com- 

 plete examination 

 or inventory was 

 made of contents of 

 haul. 



Boat dr. was not 

 tied, hence botm. 

 not accurately de- 

 termined. 



Strong ebb. 

 Do. 



Strong ebb; lost #20 

 townet ; was fouled 

 in propeller strut. 



Strong ebb. 



Do. 

 Do. 



Ebb. 



Do. 

 Do. 



