Trans. Roy- Soc. Edin. 
1823 
1824 
1825 
1829 
= 
EX 
QUADRUPLE ANNUAL MEAN-TEMPERATURES FOR FOUR SEVERAL SUB-ANNUAL EPOCHS, FROM 1837 TO 1877; AND BEYOND THESE DATES FOR 
1830 
1834 
1835 
1836 | 1837 1838 1839 
(840 
841 1842 
ROYAL OBSERVATORY, EDINBURGH. EA Ree 
1g43 | 1844 | 1845 | 1846 | 1847 | 1848 | 1849 | 1850 | 185) | 185 
1826 
183] 
1832 
1833 
7 
eal 
Dy ————$> 
1821 | 1822 
TH 
1827 
828 
| 
| 
SUN SPOTS 
SCHWABES NUMBER 
OF NEW GROUPS. 
WOLF'S DATES OF isoo]- 
MAX. & MIN. 
j 
| 
; 
| 
KEW OBSS$ OF 
WOLF'S LATER | so 
inches) Fah'! NUMBERS X 2. 
40°0 | 43°0 io} 
niches 
30-0 | 48- 
ches 
20-0 | 48-0 | 
niches} 
10-0 | & 
2 
ne OR 12:8 BRIT. ROOT DEEP THERM® 
ws OR ‘6-4 BRIT. FOOT DEEP THERM® 
t* or 3-2 BRIT. ROOT DEEP THERM® 
ion 
& Ct! or 25-6 grit. Hoot DEEP THERM® 
Znches z 
0-0 | 47-0] 47-0 | 48:0 | 49-0 
48:5 | 49-5. 
48.0 | 43-0 
= 
& 
~ ° ° 
v 47-5 | 48-5 
as 
3 
S 
= 47-0 | 46-0 
=) 
SS 
= 
> 
& 
~ 4 “ 
S 46-5 | 47-5 
ry 
wy) 
uJ 
46-0] 47:0 
< - 
Fah" \Fah*| 
43-5 | 44-5 | 45-5 | 46-5 
DATE ———> 
Piazzi Smyth, Del. 
1821 | 1822 
1823 
1824. 
1825 
1826 
1827 
1828 
1829 
1830 
183] 
1832 
1833 
1834. 
1835 
1836 1837 1838 1839 
1840 
1850 
_ 
iss! | les; 
— 
184 1842 1843 1844 | 1845 1847 1848 1849 
