10 



RECORD AND REDUCTION OF THE TIDES. 



Series I.— Tidal Observations from October 10, 1853, to December 28, 1853. 



Hourly observations on the pulley-gange. Adopted reading of mean level 7.0, expressed in units 



of the scale. Increasing numbers indicate rise of water. 



November. 1853. 



Mean 

 solar 

 hour. 



17th. 



Red. | Itef. 

 to obs. 



level. 





17.8 

 17.0 



16.0 



14.9 



12.0 



10.4 



9.8 



•AH 



9.0 

 10.0 



11.0 



—7.2 10.6 

 9.8 



9 



10 



11 



Noon 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



Midn't 



—7.3 

 —7.4 



—7.5 



CI 



—7.6 

 —7.7 



13.5 



16.1 



19.3 

 20.0 



20 > 

 20.8 

 20.6 

 20.5 

 19.0 



17.li 



16.0 



12.0 

 11.4 

 11.0 

 11.0 

 11.0 

 11.4 

 12.li 



14.5 



17.5 



19.7 



20.3 



1.4 



—7. 



8.7 



7.5 



4.5 



2.9 



2.2 

 1.4 

 1.3 

 2.3 

 3.3 



5.8 



S.3 



11.5 



12.2 

 13.0 



Red. 



to 

 level. 



i:;.n r. i . i ' 

 12.8 19.0 



-7.9 



—7.8 



a 



+12.2 



I.) 



1.0 

 20.3 

 20.0 



18.0 



10.5 



14.3 



13.5 



7.2 

 7.5 

 7.8 

 9.6 

 11.9 



14.5 



17.0 



18.5 



+ 12.3 



It 



—7.6 

 —7.5 



—7.4 



-7.3 



Ref. 

 obs. 



19th. 



12.7 

 11.1 



9.1 



8.1 



4.1 

 3.5 

 3.1 

 3.1 

 3.1 

 3.5 

 4.1 



6.6 



9.6 



11.9 

 12.5 

 13.6 



18.9 

 18.5 



16.3 



14.4 

 11.0 

 10.0 



9.0 



8.7 

 3.0 



in.:: 

 11.1 



14.0 



16.2 



16.5 



—7.1 



—7.0 



U 



—6.9 

 —6.8 



-6.7 



1.3.7 

 13.3 

 12.7 

 12.5 



10.5 



9.0 



6.9 



6.1 



-0.1 

 0.2 

 0.5 

 2.3 



4.7 



7.3 



'.'.:• 



11.5 



12.0 

 12.1 

 12.0 

 11.7 



9.5 



7.G 



4.2 



3.2 



2.2 

 1.9 



1.2 

 3.5 

 4.4 



7.3 



9.5 



9.8 



Red. 



to 

 level. 



Ref. |20th. 

 obs 



16.5 

 16.5 

 16.0 



15.1 



13.8 



11.4 



10.2 



9.5 



9.0 



lo.o 



10.2 



12.0 



14.9 



17.3 



19.2 

 111.5 

 20.0 

 20.5 

 20.0 

 19.6 

 19.0 



17. -1 



15.4 



13.0 



12.0 

 11.0 



lo.:; 

 11.0 

 12.r. 



14.5 



15.9 



1G.1 



—6.7 



—6.8 



-6.9 



—7.0 

 —7.1 

 —7.2 

 —7.3 



—7.4 



ft 



—7.5 



(( 

 (( 

 (( 



—7.6 



(I 

 tt 



—7.7 



—7.8 

 —7.9 



tt 



—8.0 



It 



—8.1 



II 

 tt 



—8.2 



9.8 

 9.8 

 9.3 



8.3 



7.0 



4.5 



3.3 

 2.5 

 l.ll 

 2.8 

 2.9 



4.7 



16 5 

 17.0 

 17.4 

 16.8 



16 



14.5 



12.7 



12.0 



11.6 



11.2 

 11.2 

 11.5 

 12.4 



7.5 14.5 



9.9 



11.7 

 12.0 

 12.5 

 13.0 

 12.4 

 12.0 

 11.4 



9.7 



7.7 



5.2 



4.1 

 3.1 



2.:; 



3.0 

 4.4 



G.4 



7.8 



7.9 



Red. 



to 

 level. 



—8.2 



tt 



—8.3 



Cf 

 {1 



—8.4 



tt 



—8.5 



(I 



tt 



—8.6 



(I 



—8.7 

 —8.8 



Ref. 



obs. 



8.3 

 8.8 

 li.l 

 8.5 



7.7 



6.1 



4.3 



3.5 



3.1 

 2.7 

 2.6 

 2.9 



3.7 



5.7 



21st. 



17.5 | 



19.5 



20.0 

 20.5 

 20.5 

 20.6 

 20.5 

 20.2 



18.9 



17.0 



15.2 



13.5 



13.2 

 13.1 

 13.1 

 13.5 

 13.7 



14.7 



16.2 



-8.9 8.6 



-9.0 



(( 



-9.1 



t< 

 u 

 -9.2 



it 



-9.3 



-9.4 

 cc 



-9.5 



(( 



tt 



tt 



-9.6 



L0.5 

 11.0 

 11.4 

 11.4 

 11.5 

 I L.3 

 ll.o 



9.6 



7.7 



5.8 



4.1 



3.7 

 3.6 



:; 6 

 4.0 

 4.1 



5.1 



6.6 



17.3 

 17.5 

 17.6 



17. ii 



L7.6 



17.0 

 16.5 



L3.6 



13.4 

 13.2 

 L3.0 

 L3.0 

 13.0 

 L3.0 

 13.1 



1(1.7 



19.1 



19.5 



20.0 



1.0 

 3.5 

 5 2 

 5.2 



5.0 

 4.3 

 3.9 



3.2 



1.6 

 1.0 

 0.3 

 0.4 

 0.6 

 0.5 

 0.8 

 0.5 

 0.2 

 1.2 

 1.7 



22d. 



Red. Ref. 

 to obs. 

 level. 



—9.9 



+9.6 



+7.2 

 + 4.9 



tt 



+4.8 



tt 



+4.6 

 +4.4 

 +4.2 

 +4.0 



K 



+ 3.8 



U 



+3.6 



tt 



+3.4 

 +3.3 



6.9 



9.3 



9.6 



10.1 



10.6 



10.7 

 10.1 



lo.l 

 9.8 

 9.1 

 8.5 



7.6 



5.8 



4.:: 

 4.4 

 4.4 

 4.3 

 4.4 

 4.1 

 3.6 

 4.6 

 5.0 



3.5 

 3.9 

 4.3 



4.4 

 4.5 

 4.5 

 4.0 



3.2 



3.5 



3.3 

 3.0 



ll.o 

 2.8 

 2.H 

 3.0 

 3.5 



4.3 



5.6 



7.2 



8.0 



8.4 

 8.5 

 8.5 

 8.5 

 8.5 

 8.0 

 4.8 



5.6 



4.6 



3.1 

 3.1 

 3.1 



3.1 

 3.1 

 3.5 

 4.1 



+3.2 



+3.1 

 + 3.0 

 +2.9 



U 



+2.8 



+2.6 



+2.5 



+2.4 



+2.3 

 it 



tt 

 +2.2 



+2.1 

 +2.0 

 +1.8 

 +1.6 



li 



+1.4 



ft 



+1.3 

 +1.2 

 +1.1 

 +1.0 

 +0.9 



ft 



+0.8 

 +0.7 

 +0.6 

 +0.5 

 +0.4 



6.7 

 7.1 



7.4 

 7.4 

 7.4 

 7.4 

 6.8 



5.8 



6.0 



5.7 

 5.4 

 5.3 

 5.1 

 5.2 

 5.2 

 5.7 



6.5 



7.7 



9.2 



9.8 



10.0 



10.1 



9.9 



9.9 



9.8 

 9.3 

 6.0 



6.7 



5.6 



4.0 

 4.0 

 3.9 

 3.8 

 3.7 

 4.0 

 4.5 



Nov. 17. The scale reads up to 20, hence the reading 1.4 at midnight is equivalent to 21.4. 

 Nov. 21. At 1 P. M. the upper limit of the scale was reached, the index was changed afterwards. 



