643 



RECORD OF DREDGING, 



TEMPERATURE AND DENSITY. 



>t[tti<.ni Xo. 

 Date. 



Time of day. : of tide, 



Lf)Cality. 



Exact ifosirioii, 



Depth, 



Xatnif of IjottuiM, 

 Dredging iustruineiii U!?ed, 

 Direc tion of drift, ; distance, 



Temperature of air, tiierm. Xo., 



r,f surface water, 

 at depth <)i' fathoiii.-?. 

 " at l ottoiii, 



Den.-iity at surface. teujp., 

 " at depth of lathoiii.'s. 

 at bottom, 

 Xuiuber of salinometer, 

 liaroineter reatliii*;. 

 • . ni ■^Uy. 



JJiit ctiou of wind, ; lou t', 



Kaiii. 



Direction of surface current. : force, 



ofhotloiu •■ ; Um-<-. 



Xauie of vessel, 

 Service to whicli attached, 

 Xarne and rank of comraaiidiiig officer, 



