DREDGING AND HYDROGRAPHIC RECIORDS. 

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



53 



Temperature. 



'F. 



52.58 

 52.68 



52.38 

 51.88 



F. 

 52.38 



56.00 

 56.00 



58.00 

 57.00 

 57.00 



°F. 

 48.70 



48.86 



49.56 



Salinity. 



Surf. 



34.16 

 33.89 



33.87 

 34.08 



34.27 



Apparatus. 



12' Ag.; 19" dr.; botm. 

 4'inter.;Tnr. and 



cse.;#12,iP0; 

 Ek. bot. 



do 



.do. 



..do. 



-do. 



oys. dr. 



.do. 



.do 



o'sldg 



5' sldg.; ra. b. 

 do 



oys. dr. 

 do. 



Trial. 



Depth. 



oys. dr botm. 



surf. 



.do... 



.do. 



.do. 



botm... 



.do.... 



o'sldg.; m. b. 



.do. 



5' sldg. 



...do. 



...do. 

 ...do. 

 ...do. 



.do. 

 .do. 



botm. 



.do. 



.do. 



Dur:v 

 tion. 



Min. 

 20 



Drift. 



7i 

 20 

 20 



5J 

 4 



N.561°W 



N. eg-'w. 



S.61°E.. 



...do.. 



20 ...do 



S.81°E.. 



8.87" E... 



N.Sl'E... 



N.31°E. 



N.34°W 

 N.27i° W. 

 N.36i°E.. 



8.25" W.. 

 8.35° W.. 



S.84J''E.. 

 S.47°K... 

 S.54°E... 



Mi. 



1.0 



.45 



58 

 1.3 



Messenger on inter, 

 therm, failed to re- 

 lease till liroughtto 

 surf. Rotm. sam- 

 ple and readings 

 approximate. In- 

 ter, temp., 49.71; 

 inter, sal., 33.99. 

 Ebb. 



Inter, sal., 33.a3; in- 

 ter, temp., 52.31. 

 Ebb. 



Ebb. Botm. therm, 

 did not trip. Inter, 

 temp. 49.51; inter, 

 sal., 33.92. 



Ebb. Lost sounding 

 lead after lifting 

 from water. Inter, 

 temp., 49.31; inter, 

 sal., 34.01. 



Botm. Ek. bot. failed 

 to trip. Ebb. In- 

 ter, temp., 51.81; 

 inter, sal., 34.03. 



Flood . Towed 

 astern. 



Do. 



Do. 

 Flood. 



Do. 

 Do. 

 Do. 



Ebb. Dr. caught 

 several times regis* 



tering over .5 tons. 



Ebb. Accumulator 



registered 5 tons. 



Flood. To we d 

 astern. Bridle 

 lashed to frame 1' 

 on each side. 



Flood. Towed 

 astern. 



Do. 



