140 



Report upon ihe Bim of the Sea, 



[Jan. 



canoe was overset, and the Indicator wrenched off on the morning 

 of the 2d November ; and the canoe itself broke from its mooring and 

 came ashore on the following day : thus circumstanced, 1 have caused a 

 catamaram from time to time to be left to float over a measured space, 

 from which the velocity of the current has l&een computed ; thus — 



Date. 



Octr. I at 11 A. 

 16—11 — 



25— 1 1 - 



26— 11 — 



26— 1 P. 



27— 7 A. 



- 9 

 10 

 11 

 12 

 • I 



2 



- 3 



- 4 



- 5 

 11 



5 

 11 



M. 



P.M 



Novr.3 



8 

 19 



26 



Deer. 3 



A, 

 P. 

 A. 

 1 1,30 A. 

 5,30 P. 

 11,30 A. 

 5,0 P. 

 11,30 A. 

 4,30 P. 



Velocity. 



By VThat means measured. 



No percep.current.jBy catamaram 

 0,80 miles per hour do 

 1,30 „ do 



2.50 

 2,52 

 1,87 

 1,87 

 1,87 

 1,87 

 1,87 

 1,90 

 2,50 

 2,50 

 2,50 

 2,90 

 2,90 

 1,50 

 3,00 

 2,01 

 1,40 

 1,30 

 0,76 

 1,40 

 0,90 

 1,40 



By Massy's Patent Log 



By catamaram 



By Indicator a. ^ ^ 2 S 



do ^ ^ - ^ rr! 



do 

 do 

 do 

 do 

 do 

 do 

 do 

 do 

 do 



catamaram ^ 4i ^ ^ 



rrt 00 d 



«3 2 g ^ 

 ^ "tS ;2 ctf 



The Tides. — The apparatus for determining the times of high and 

 low water, was a pile of 34 feet in length ; which I had intended should 

 be driven in the sea at about 300 yards from the shore: to the upper 

 end of this pile was attached a hollow iron cylinder of 8 feet length, 

 closed at the bottom — which would always be underwater — with the ex- 

 ception of a very small hole ; and an aperture left in the top (which 



• At 5 P. M. the current had evidently increased in strength, insomuch that the 

 catamaram men refused to go olf— saying they could not reach the nearest buoy under 

 two hours. 



The direction of the current noticed in the above, was generally parallel with the 

 shore, but on one or two occasions I fancied it had a sliErht inclination (to the amount 

 of 2 or 3 degrees ) towards the shore, 



