132 REPORT—1849, 

tion above mentioned. These phenomena are rendered more apparent by 
the annexed curves, fig. 6. 
3 3 
1 ee 4 
4 A.M. 10 A.M. 10 P.M. 2a.M. 
1845. 
years 1845, 1846 and 1847, with the mean 

1846, Mean. ( : 
on 
35 
é Eg In the following table, the diur- 
, £4 nal periods, as deduced from the 
= S aggregate observations and from 
Es those below 60 div., are placed in 
££ contrast. 
1847, Mean. 83 
z 
8 
3 
Z 
5 
3 
o 
o 
3 
= 
o 
o 
5 
3 years. Mean. § 
i 
| | 
4a.M. 10 A.M, 10 P.M. 2 A.M. 5 
vo 
A 
ghia ag 
TABLE XXIII. 
Comparison of the excess or defect from the mean of the diurnal periods of 
the entire year, as deduced from the aggregate observations and from 
those below 60 div. 
Value. |Mid.|2 a.m./4 a.m.|6 a.m./8 a.m.}10 a.m./Noon.|2 p.m.|4 p.m.|6 p.m./8 p.m./10 p.m.|Mean., 






div. | div. | div, div. diy. 








diy. | div, | diy. dy. diy. div. diy. | div. 
+] 4+ )/+]/+]+}4+) +] 4 
Aggregate .. 44: 3 46" 8 46" 4 39" 7\13 | 21-2 | 85 | 46 | 2:2 |17°9 |35°5 | 37-1 | 66:9 
+ {| +] +] +/+ + 
Below 60 div. 6 0 8: 5 | 8 8-7 4: 19 1:0 3°7 | 36 | 3:4 | 39 55 | 62 | 69 |28°6 
Diurnal. period below 60 div., Summer.—The 7529 observations below 
60 div. are thus distributed in the two half-years :— 
UMMRER eo. Fc we'ste 2. 4846 
Wintenieec cn... ste cc's 2OGD 


