386 ON THE SOLAB VAEIATIONS OE MAGNETIC DECLINATION AT BOMBAY. 
magnet points, when the sun is north of the equator, to the eastward of its mean annual 
position, which is contrary to what is found for Bombay ; and, secondly, because the 
annual variations at Bombay, calculated, as in Table XXI., for each individual year, are 
irregular and inconsistent with each other to an extent much exceeding the whole range 
of the semiannual inequality. These irregularities are attributable, I believe, almost 
entirely to the defect of the reading-transit instrument of the declinometer alluded to in 
paragraph 7. The annual variations found for the different years are as follows : — 
Table XXIII. — Showing the annual variation of Declination calculated, after the 
elimination of secular change at the rate of 0 ,- 2515 per month, for the several years 
1859, 1860, and 1862 to 1865. 
Years. 
January. 
Febru- 
ary. 
March. 
April. 
May. 
June. 
July. 
August. 
Septem- 
ber. 
October. 
Novem- 
ber. 
Decem- 
ber. 
1859. 
+•524 
+■516 
+•559 
+ -046 
+•153 
-•067 
-•211 
-•638 
-•511 
- -239 
-•208 
+•079 
1860. 
+•409 
+•174 
+•383 
+ -094 
-•056 
+•176 
+•088 
+•134 
-•398 
- -581 
-195 
-•228 
1861. 
1862. 
-077 
-•356 
-•444 
- -170 
-758 
+•040 
+•364 
+•170 
+•172 
+ -295 
+•186 
+•579 
1863. 
+ 119 
-•073 
+•868 
+1-003 
+•050 
-■410 
-•284 
-•554 
-182 
- -098 
-•563 
+•128 
1864. 
+•192 
-•289 
-194 
- -493 
-•366 
-•311 
-•120 
-114 
+•042 
+ 1-410 
+•582 
+•362 
1865. 
-077 
-•278 
-•468 
-1-583 
-•647 
-•403 
-Oil 
+•846 
+•832 
+ -809 
+•081 
+ •900 
