Harmonie Analysis of Tidal Observations. X7 



machine, did good service in the addition. Harris's "Manual of 

 Tides," and especially the tables at the end of each volume, were 

 also consulted with great advantage. 



In our case, the number of waves on which harmonic analysis 

 are made is limited to twenty-eight, and these are as follows; — 

 Sj, S2, S„ Se, M„ M,, Ms, M„ Me, 0„ Ki, K^, 1^, J„ Q„ L^, 

 N2, /^,, V2, R„ 1\ MS, 2SM, Mm, Mf, MSf, Sa, and Ssa; namely, 



6 semi-diurnal lunar tides, 



5 diurnal lunar tides, 



3 long period lunar tides, 



3 semi-diurnal solar tides, 



2 diurnal solar tides, 



2 long period solar tides, 



5 overtides, 

 and 2 compound tides. 



The Results of the Analysis. 



The results of the harmonic analysis are given in detail in the 

 following tables. Here the results at each station are described in 

 a separate table. The arrangement of the tables will be understood 

 by the explanations below. First, a map of the ground surround- 

 ing the tidal observatory is attached at the end of the report, which 

 is generally a reproduction from the hydrographie chart of the 

 Hydrographie Department of the Navy. In it the exact location 

 of the observatory is clearly marked. The scale of these maps 

 is not uniform, as we wished to give a general idea of each station 

 and this made it necessary to change the scale to suit the con- 

 ditions of each place. Next, short notes relating to the station 

 are made, including the mean sea-level derived from each series 

 and referred to the zero-point of the instrument. 



