Phil Mag.a4.Vol48.Pl.III. 



ig . 4 . 

 Bar of the Mississippi. 



Stratturv at freslv^ater. 71eet/deep/rTauiing perfwur frvm.> 



Ztc Zwirules, and passing over theJjar-witlwid/ IcsingTts-vdvdty. 



Stratum/ cf 'saltwater lit. deep, vunmnq a&ih&saYTwspezcl'asN!!. 



Do ■ » „ " „ ., ,i >■ ,> 7 rrvil&pen 1 - hour. 



Do . ,, „ // , „ ,, supposed to l?e stationary. 



Dr. ,. „ » ,. * „ Hmvina tcvvarasih&Bca: 



NOTE For oaladatcng -ydoaty of Water w 

 icriiifcTTw -nwtitnv luee/ m> practice my 

 fi>rmMla& yytth d6u l %resnt a> >eftlcurtfs 

 fir different Tnxtftruib ofjrtuidal 

 Charauls ,such <u €amrU/ / Iartk / Tkcnks& & 



Tims, v= 10 #q.i orv= 3S tf^.i . or I use 

 &*se fmmdck Oxen m JPa^ 205 of this Pap 



