390 



Prof. B. Stewart on 



[May 16, 



year or on the relative position of the sun and moon. These are 

 exhibited in Table II. 



Table II. Exhibiting monthly means of the declination-range, the 

 mean value of the range for the whole series for each month, as 

 given in Table I, being reckoned = 1000. 





Jan. 



Feb. 



March 



April 



May 



June 



July 



Aug. 



Sept. 



Oct. 



JNov. 



Dec. 



1839 















1214 



1396 



1204 



1355 



1392 



1047 



1840 



1299 



1420 



1168 



1234 



1088 



1061 



1057 



1007 



1190 



1184 



1147 



1626 



1841 



1193 



1181 



1085 



925 



949 



1015 



845 



873 



954 



970 



958 



1107 



1842 



834 



817 



830 



861 



921 



822 



736 



832 



773 



863 



783 



702 



1843 



706 



839 



731 



782 



789 



866 



825 



780 



934 



814 



556 



821 



1844 



557 



473 



835 



716 



753 



794 



840 



803 



764 



986 



864 



772 



1845 



710 



718 



877 



833 



977 



959 



854 



970 



835 



739 



734 



958 



1846 



676 



671 



950 



923 



1086 



999 



1066 



1029 



905 



948 



958 



834 



1847 



725 



880 



996 



1012 



1096 



972 



1017 



1214 



1236 



1157 



1461 



1477 



184S 



1384 



1209 



1225 



1034 



1254 



1251 



1361 



1407 



1294 



1211 



1138 



1373 



1849 



1459 



1329 



1259 



1290 



1266 



1200 



1207 



1080 



1073 



1107 



1161 



983 



1850 



1316 



1113 



1152 



1127 



1270 



1281 



1206 



1087 



1136 



1155 



1094 



996 



1851 



1206 



918 



830 



938 



1015 



1074 



1043 



929 



1024 



1054 



981 



1286 



1852 



1193 



1486 



1164 



1023 



1000 



1048 



932 



949 



1060 



1063 



1178 



1032 



1853 



934 



773 



1023 



839 



767 



878 



949 



829 



850 



841 



930 



1030 



1854 



925 



1275 



924 



976 



999 



876 



942 



899 



760 



850 



680 



868 



1855 



897 



969 



917 



872 



841 



835 



870 



819 



782 



953 



835 



632 



1856 



649 



824 



630 



786 



762 



829 



805 



866 



871 



817 



771 



611 



1857 



734 



762 



691 



767 



839 



900 



927 



899 



861 



950 



1034 



862 



1858 



938 



1074 



908 



1027 



470 



463 



621 



1003 



1265 



1359 



1037 



870 



1859 



655 



920 



1220 



1365 



1263 



1167 



1177 



1239 



1629 



1442 



1256 



1704 



1860 



1104 



1193 



1395 



1116 



1290 



1355 



1336 



1429 



1142 



1111 



863 



911 



1861 



946 



1241 



1004 



1169 



1113 



1122 



1034 



1086 



1014 



887 



1097 



1209 



1862 



1014 



730 



719 



915 



888 



1168 



1130 



1165 



895 



1295 



1111 



1015 



1863 



1306 



1135 



1072 



1044 



1150 



967 



957 



928 



954 



1019 



1057 



1177 



1864 



998 



845 



1085 



876 



979 



1033 



915 



942 



823 



1001 



1018 



819 



loDO 



1 AT 9 

 JLU / a 





11 /O 





-l An- 



lUUo 



yuu 







GQQ 



yyy 



OO-i 



CMQ 



y4y 



^tyo 



1866 



1172 



1353 



835 



901 



865 



849 



848 



697 



804 



731 



1124 



677 



1867 



831 



767 



864 



840 



831 



858 



910 



821 



794 



703 



764 



815 



1868 



874 



836 



991 



1084 



884 



872 



947 



972 



' 944 



921 



1002 



1145 



1869 



1053 



1041 



1129 



1041 



1033 



1270 



1177 



1033 



1135 



1096 



932 



930 



1870 



1142 



989 



1308 



1386 



1452 



1318 



1393 



1369 



1353 



1287 



1429 



1400 



1871 



1183 



1547 



1315 



1425 



1289 



1346 



1354 



1453 



1257 



1188 



1581 



1296 



1872 



1368 



1031 



1147 



1292 



1258 



1195 



1254 



1289 



1276 



1113 



1380 



1502 



1873 



1533 



1052 



1121 



1166 



1015 



869 



1017 



1012 



1018 



1018 



985 



1026 



1874 



1229 



1094 



932 



928 



950 



904 



939 



825 



931 



846 



872 



651 



1875 



464 



830 



778 



848 



867 



858 



783 



824 



780 



695 



621 



666 



1876 



721 



623 



717 



711 



724 



826 



i 



880 



750 



687 



796 



665 



724 



4. The numbers of Table II have next been dealt with precisely in 

 the way in which the corresponding numbers were dealt with in the 

 case of the Kew and Trevandrum observations, that is to say, a set of 

 nine-monthly values of declination-range has been obtained, corres- 

 ponding to similiar nine-monthly values of spotted solar area. These 

 are exhibited in the following tables, up to the end of the year 1852, 

 after which date a comparison between the spots and declination- 



