132 REPORT — 1870, 



Yr. 1858-59. Aj = 8-7io3ft. Avcragoinclinalion of moon's orbit to earth's equator =:i8°'o 



S M K O P MS 



Ej 0-0146 o'o539 i"337o o'89i7 0-3672 



211^96 4^"'3o I92°-I7 3'''39 i6°-52 



Er, 0-4067 1-6694 o"i759 



r: 334°-i4- 33o°-8i 326°-65 



E3 very 



e„ small. 



Ej very o"o6i6 0-0248 



c. small. 23°-32 22°-33 



L 'N \ V fi 



E.> 0-0591 o'393i 0-0372 0-1044 0-0257 



el 102--63 303°-46 i88''-3o 287°-23 254°'34 



Long-period Tides. 



((T— or) 2<r 2((T-j,) )j 2,1 



R 0-0093 0-0586 o"oi83 0-2119 0-2244 



6 i69°-9 i45^"3 2ii°-o 37^'o 2oi°-4 



Eetardation of phase of Spring-tides o^ 3); ^3™ 1 ^fte, „,oon's .syzygies. 



Coincidence of phase of Declmational tides 0° 12" 55" J •' •'° 



A comparison between the calculated and recorded heights for Fort Point 

 is appended (§ 69). 



67. A series of tide observations extending through two years, commencing 

 1868, May 1, taken by the Manora self-registering tide-gauge at Kurrachee, 

 has been received from W. Parkes, Esq., M. Inst. C.E. ; and the following 

 scries have been analyzed for each year separately, with the exception of the 

 solar elliptic semidiurnal tides (Series R and T), for which the tide-com- 

 ponents have been evaluated from the two years combined. The epochs are 

 referred to true hour-angles. The datum-line is 2 feet beloiu the datum-line 

 of the diagram-sheets. 



Yr. 1868-69. A(,=:7*i488ft. Average inclination of moon's orbit to earth's equator =19° 63. 



