388 REPORT — 1872. 



(1) S, — Solar Semidiurnal tide (including effect of solar elliptic diurnal). 



= 0-072 cos {(y —)/)'■ - 1 76°'57} +o'932 cos {2(7- j/V- Z^^°■^^} 



The values of K.j and R.^ have been added to each value of h to make all 

 the heights positive, and therefore the sum of 11, and E^, or 1-004, will have 

 to he subtracted in the calculations of the heights on account of these tides. 

 Similarly, in the other Tables the value of E, has in each case been added 

 (except for the hmisolar diurnal and semidiurnal tides, for which tides 1-12 

 foot instead of 1-41 foot has been applied) ; the augmented values arc indi- 

 cated by the symbol li . 



Instead, therefore, of the mean height being added to the sum of the values 

 of li in the formation of the tide-heights, the difference between the mean 

 height and the sum of the whole of the tide-components is to be applied. 

 Care should be taken, in reading off the tide-heights in the first instance, to 

 choose a datum-line sufficiently low, in order to secure this difference being 

 positive. 



Tables for the other tide-components have been similarly formed, and are 

 here given : — ■ 



