48 
LIEUT.-COLONEL SABINE ON THE LUNAR 
1st. From the superior to the inferior passage. 
Lunar hours. 
0 . 
i. 
2. 
3. 
4. 
5. 
6. 
7- 
8. 
9. 
10. 
11. 
Oct. 1S43 to March 1844 ... 
+•0017 
+•0012 
+•0004 
-•0007 
-•0021 
-■0018 
-•0018 
-■0016 
-•0019 
-0013 
-■0004 
+•0014 
April 1844 to Sept. 1844 ... 
+ ■0023 
+•0020 
+•0015 
+•0007 
-•0001 
-•0013 
- -0028 
-•0027 
-0011 
-•0004 
-•0006 
+•0009 
Oct. 1844 to March 1845 ... 
+•0021 
+•0026 
+•0023 
+•0014 
+•0007 
+•0001 
-•0007 
-•0003 
+•0005 
+•0010 
+•0017 
+•0006 
April 1845 to Sept. 1845 ... 
+•0009 
+■0001 
-•0008 
-•0018 
-•0021 
-•0024 
-•0032 
-•0024 
-•0008 
+•0008 
+■0016 
+•0026 
Mean of the 1st year 
+•0020 
+•0016 
+•0009 
•0000 
-•0011 
-•0016 
-•0023 
-•0022 
-■0015 
-•0009 
-•0005 
+•0012 
Mean of the 2nd year 
+ 0015 
+ 0014 
+•0008 
-•0002 
-•0007 
-•0012 
-•0020 
-•0014 
-•0002 
+■0019 
+•0016 
+•0016 
Mean of the four half years 
+•00175 
+•00148 
+•00085 
- 00010 
-•00090 
-•00135 
-■00212 
-•00175 
-•00082 
+•00002 
+•00058 
+•00138 
2nd. From the inferior to the superior passage. 
Lunar hours. 
12. 
13. 
14. 
- 15. 
16. 
17- 
18. 
19. 
20. 
21. 
22. 
23. 
Oct. 1843 to March 1844 ... 
+•0021 
+•0020 
+•0015 
-•0006 
-•0002 
-•0005 
-•0008 
-•0007 
+•0003 
+•0012 
+ 0016 
+•0018 
April 1844 to Sept. 1844 ... 
+•0005 
-•0002 
-■0007 
-•0009 
-•0015 
-•0014 
-•0015 
-•0005 
+•0003 
+•0018 
+•0024 
+•0027 
Oct. 1844 to March 1845 ... 
+ •0011 
+ ■0007 
-•0004 
-•0024 
-•0024 
-•0026 
-•0026 
-•0023 
-•0018 
+ •0001 
•0000 
+•0005 
April 1845 to Sept. 1845 ... 
+•0027 
+•0022 
+■0018 
+•0010 
-•0006 
-•0015 
-•0024 
-•0023 
-•0021 
-•0001 
+•0006 
+•0012 
Mean of the 1st year 
+•0013 
+■0009 
+•0004 
-•0008 
-•0009 
-•0010 
-•0012 
-•0006 
+•0003 
+•0015 
+•0020 
+•0023 
Mean of the 2nd year 
+•0019 
+•0015 
+•0007 
-•0007 
-•0015 
-•0021 
-•0025 
-•0023 
-•0020 
•0000 
+•0003 
+•0009 
Mean of the four half years 
+•00160 
+ •00118 +-00055 
-•00072 
-•00118 
-•00150 
-•00182 
-•00145 
-•00082 
-•00075 
+•00115 
+■00155 
The evidence is here of the most decisive character of a barometrical maximum at 
the lunar hours of 0 and 12, and a minimum at 6 and 18, with a corresponding pro- 
gression at the intermediate hours. 
If we now arrange these results in such manner that the hours are combined in 
which the moon is similarly situated in respect to the meridian, we have the lunar 
horary variation of the barometer as follows : — 
Variations of barometric pressure. 
Horary variation. 
Moon’s 
distance 
From the obser- 
From the obser- 
Moon’s 
distance 
from the 
meridian. 
At the hours following the 
meridian passage. 
At the hours preceding the 
meridian passage. 
vations at the 
hours following 
the meridian 
vations at the 
hours preceding 
the meridian 
Mean. 
from the 
meridian. 
passage. 
passage. 
h 
h in. 
in. 
h in. 
in. 
in. 
in. 
in. 
h 
0 1 
0 + -00175 1 
12 + -00160 
• +-00168 
0 + -00175 1 
12 + -00160 J 
• + -00168 
+ •00365 
+ •00365 
+ -00365 
0 
' 1 
1 +*00148 1 
13 + -001 18 
+ •00133 
11+ *00138 1 
23 + -00155 J 
. +-00146 
+ •00330 
+ -00343 
+ -00336 
1 
2 \ 
' 
2 + ‘00085 
14 + ’00055 
> +-00070 
10 + -00058 
22 + -001 15 
> + -00086 
+ •00267 
+ •00283 
+ •00275 
2 
3 j 
3 — ‘00010 
15 — -00072 
. — -00041 
9 + -00002 
21— -00075 J 
• — -00036 
+ •00156 
+ -00161 
+ •00158 
3 
4 i 
4 — -00090 
16 — -00118 j 
, — -00104 
8 — -00058 
20 — -00082 J 
■ — -00070 
+ -00093 
+ •00127 
+ •00110 
4 
5 \ 
5 — -00135 ] 
17 — "00150 i 
, — -00142 
7— -00175] 
19 — -00145 J 
> — -00160 
+ -00055 
+ •00037 
+ •00046 
5 
6 
r 
6 — 00212] 
18— -00182 
f --00197 
6 — -00212' 
18 — -00182 
-•00197 
00000 
00000 
00000 
6 
