586 OBSERVATIONS ON THE BAROMETER, 
MR. HENRY HOUGH WATSON’S ACCOUNT OF THE FALL OF RAIN AT BOLTON, 
DURING TEN YEARS. 
1831.}1832.|1833.)1834.|1835 |1836-/1837./1838.|1839 |1840. 
I F : 5 e In. In. ere In. aun 
anuary....| 1. 5 : 5 .10) 5.05} 3.54 | 0 
3.36| 4.40\f 29 727/19 10 
5.31| 1.41] 3.04] 5.01] 0.73 
4.37] 2.02| 3.94] 1.03] 1.36 
0.18) 1.57] 3,89} 0.53) 4.50 
2.61) 6.64) 3.14) 4.35 
5.76| 3.12] 4.43) 6.59] 6.65 
i é 3 ; 2.82] 2.86] 6.94] 3.55] 5.37 
September. .| 5. : : : 43] 4.30] 3.52] 1.80] 6.95) 4.72 
October.... . % 5 4 5 4.21] 5.98] 7.83] 2.78] 3.22 
November..| 9. 6.50) 3. ‘ 6.10] 2.90} 5.22) 5.57 
December ..} 4. 6.58|10.47| 1.5 5.12] 2.64) 3.19) 0.42 
Total .. |62.30)53.77|51.70/43.98/46.44|53.78|42.25]47.85/45.26/45.03/49.20 
MR. HENRY HOUGH WATSON’S ACCOUNT OF THE MEAN VAPOUR POINT AT 
BOLTON, DEDUCED FROM OBSERVATIONS MADE DAILY AT NOON, DURING 
NINE YEARS.* 
Years. |Jan. | Feb./Mar. Apr. |May.|June July |Aug.|Sept} Oct./Nov.|Dec.| Mn. 
1831 Css i ia fa ea 
52 
* He determines the vapour point by the means recommended by me, Man. Memoirs, 
vol. 5, Old Series, page 582. 
