Memoirs presented to the Cambridge philosophical society on the occasion of the jubilee of Sir George Gabriel Stokes, bart., Hon. LL. D., Hon. SC. D., Lucasian professor.

FROM RECORDS OF THE GREENWICH OBSERVATORY, 1871-1895. 119
TABLE VII. 27 DAY PERIOD.
Year r12 r2 r3 r2 r52 No. of
Periods
1869 3-667 0-923 1 205 0-457 0 339 13
1870 13-875 4 326 3'968 1-375 1'800 14
1871 18'320 1181 1-978 1-071 0-301 13
1872 22859 1-256 0-447 0-113 0'088 14
1873 3-963 6-470 0-708 2'609 1-871 13
1874 5-044 1-073 1-260 1-330 2-624 14
1875 0-440 0-743 0'008 0-951 1 404 13
1876 5-297 0-473 3-910 2-403 0'092 14
1877 0-673 0-548 0'105 0'509 0-148 14
1878 5-264 0'192 0-142 1'823 0'709 13
1879 2 078 0-016 0-227 0-036 0-142 14
1880 5722 0794 1-456 0-269 0-331 13
1881 2 258 3 589 2-960 2-662 0-305 14
1882 12-857 1-561 0-693 0-163 0-146 13
1883 2-198 2-844 0-155 1'992 0-680 14
1884 4-348 1-619 0'098 0-875 1 1060 13
1885 1'190 0519 0-816 0009 1-657 14
1886 8 555 1-403 0-094 1-567 0-062 13
1887 4 692 0-167 0-560 0-685 0-033 14
1888 1-742 0-004 0-268 1-079 0 427 14
1889 1-270 2347 0804 0270 1-116 13
1890 1-396 1-074 0-373 1-038 0 211 14
1891 6-548 0-710 0-536 0-715 0-591 13
1892 5-177 1-177 3-533 0'307 0-035 14
1893 14-654 3'059 0908 0'252 1'190 13