xcii CAPTAIN ELLIOT’S MAGNETIC SURVEY OF THE INDIAN ARCHIPELAGO. 
Table C. 
Diurnal Variation of the Tension of Vapour at 
Astron. Mean Time. 
12. 
13. 
14. 
15. 
16. 
17. 
18. 
19. 
20. 
21. 
22. 
in. 
in. 
in. 
in. 
in. 
in. 
in. 
in. 
in. 
in. 
in. 
June 1846 
•031 
•028 
•023 
•018 
•012 
•008 
•000 
•010 
•038 
•071 
•077 
July 
•035 
•030 
•021 
•013 
•on 
.006 
•000 
•009 
•029 
•06l 
•080 
August 
•034 
•029 
•022 
•016 
•014 
•005 
•000 
•on 
•031 
•055 
•069 
Sums 
•100 
•087 
•066 
•047 
•037 
•019 
•000 
•030 
•098 
•187 
•226 
Means and Variation . 
•033 
•029 
•022 
. -016 
•012 
•006 
•000 
•010 
•033 
•062 
•075 
Diurnal Variation of the 
October 1847 
•019 
•015 
•006 
•000 
•040 
•085 
•141 
•125 
November 
•010 
•006 
•004 
•000 
•028 
•080 
•117 
•120 
December 
•010 
•002 
•000 
•000 
•022 
•084 
•149 
•143 
January ... 1848 
•013 
•005 
•000 
•004 
•018 
•067 
•127 
•134 
Sums 
•052 
•028 
•010 
•004 
•108 
•316 
•534 
•522 
Means and Variation . 
•012 
•006 
•002 
•000 
•026 
•078 
•133 
•1.30 
Diurnal Variation of the 
November ...1848 
•024 
•018 
•015 
•on 
•000 
•010 
•018 
•026 
December 
•024- 
•022 
•022 
•000 
•002 
•005 
•018 
•018 
Sums 
•048 
•040 
•037 
•on 
•002 
•015 
•036 
•044 
Means 
•024 
•020 
•018 
•005 
•001 
•007 
•018 
•022 
Variation 
•023 
•019 
•017 
•004 
•000 
•006 
•017 
•021 
Diurnal Variation of the 
November ...1846 
•022 
•018 
•on 
•008 
•006 
•000 
•000 
•022 
•042 
•053 
•042 
December 
•020 
•016 
•016 
•013 
•009 
•003 
•000 
•016 
•043 
•057 
•054 
January 1847 
•029 
•026 
•019 
•012 
•008 
•000 
•005 
•010 
•032 
•038 
•046 
February 
•025 
•027 
•019 
•016 
•on 
•006 
•000 
•010 
•037 
•045 
•049 
Sums 
•096 
•087 
•065 
‘049 
•034 
•009 
•005 
•058 
•154 
•193 
•191 
Means 
•024 
•022 
•016 
•012 
•008 
•002 
•001 
•014 
•038 
•048 
•048 
Variation 
•023 
•021 
•015 
•on 
•007 
•001 
•000 
•013 
•037 
•047 
•047 
Diurnal Variation of the 
March 1847 
•021 
•012 
•005 
•000 
•020 
•041 
•047 
•049 
April 
•033 
•013 
•000 
•000 
•025 
•048 
•073 
‘073 
May 
•034 
•020 
•012 
•000 
•027 
•057 
•071 
•076 
June 
•027 
•017 
•003 
•000 
•014 
•039 
•062 
•044 
Sums 
•115 
•063 
•020 
•000 
•086 
•185 
•253 
•242 
Means and Variation 
•029 
•015 
•005 
•000 
•021 
•046 
•063 
•061 
