DREDGING AND HYDROGRAPHIC: RECORDS. 

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



61 



Temperature. 



F. 

 53.23 



53.33 

 53.73 

 53.63 

 54.53 



.53.53 



51.93 

 52.23 



F. 

 53.18 



53.23 

 53.78 

 53.73 

 52.93 



53.68 



52.28 



52. 43 52. 38 



52. 53 52. 38 



52.53 

 52.63 

 52.53 

 52.03 



50 52. 00 



52 



52.63 

 52.68 

 52.63 

 52.48 



52.00 



SiUinity. 



Surf. 



29.50 



29.50 

 29.95 

 30.50 

 30.20 



32.28 



32.28 

 31.75 



31.66 

 29.34 

 30.66 

 28.40 

 27.33 



Botm 



28.56 



29.50 

 29.95 

 29. S9 

 30.28 



32.37 



32.37 

 32.14 



31.66 

 31.51 

 31.21 

 30. 35 

 29.04 



Apparatus. 



Ek. bot.; Tnr. 

 cse. ; 4' in- 

 ter.; #12, 

 #20; Pr. m. 



....do 



....do.... 



....do.. 

 ....do.. 



....do.. 



Ek. bot.; Tnr. 

 cse. ; 4' in- 

 ter.; #12, 

 #20 Pr. m. 



....do 



...do. 



..do. 

 ..do. 

 ..do. 

 ..do. 

 ..do. 



o. p. dr. . . 



5'sldg 



o. p. dr.; 5' sldg 



do 



5' sldg. 



Trial. 



Pepth. 



surf 

 and 

 botm. 



..do.... 



..do.... 

 ..do.... 

 ..do.... 



..do.... 



surf, 

 and 

 botm. 



...do.... 

 ..do.... 



..do.... 

 ..do.... 

 ..do.... 

 ..do.... 

 ..do.... 



botm... 



Dura- 

 tion. 



.mil. 

 11 



n 



10 



11 

 io;v 



-do., 

 .do.. 



.do. 



.do.. 



15 

 10 



m 



lOA 

 10 



Drift. 



Direction. 



Against 

 tide. 



.do. 

 .do. 

 .do. 

 .do. 



...do.. 



Against 

 tide. 



..do 



..do 



..do. 

 ..do. 

 ..do. 

 ..do. 

 ...do 



95" 



76° 



Remarks. 



.\n. 



0.54 



0.88 



Ebb, 2.(M knots per 

 hr. 



Ebb, 1.95 knots per 

 hr. 



Ebb, 1. 

 hr. 



knots per 



Ebb, 1.74 knots per 

 hr. 



Ebb, 1.88 knots per 

 hr. Ek. bot. fouled, 

 failed to trip, low- 

 ered immediately, 

 tripped, and read- 

 ings taken. 



Ebb, 1.59 knots per 

 hr. 



Ebb, 0.517 knot per 

 hr. 



Ebb, 0.764 knot per 

 hr. 



Ebb, 0.8 knot per ht. 



Ebb, 0.82 knot per 

 hr. 



Ebb, 1.48 knots per 

 hr. 



Ebb, 2.04 knots per 

 hr. 



Ebb, 2.33 knots per 

 hr. 



Ebb, 2.71 knots per 

 hr. 



O. p. dr. used at each 

 end, sledge trawl 

 through interven- 

 ing distance, 0..56 

 mi. Flood. M. 4 

 inches over top of 

 o. p. dr. 



No M. Cable out 30 

 fms. 



O. p. dr. i full; rest 

 washed out. 



O. p. dr. used at each 

 end, sledge trawl 

 through interven- 

 ing distance, 0.88 

 mi. Flood. M. 6 

 inches over top. 



NoM. Cable out 30 

 fms. 



