Mean Temperature of every day in the month of September, as deduced from the observations .alien on that day at the Gardens of the Royal Horticultural Society at Chisuiich in the years 1826-1869 ; 
and extremes of Mean Temperature for every day within the same period. 
SEPTEMBER. 
II826 1827 
1828 
1829 
1830 
1831 
1832 
1833 
1834 
183s 
I836 
1837 
1838 
1839 
.840 
.841 
1842 
1843 
1844 
1845 
1 846 
1847 
1848 
1849 
1850 
1851 
1852 
1853 
1854 
1855 
1856 
1857 
1858 
1859 
i860 
l86l 
1862 
1863 
1864 
1865 
1866 
1867 
1868 
1869 
1 
Lows* 
Tear 
Highest 
Year 
§f 
el'7 
620 
61*4 
591 
59-7 
51-6 
sl-8 
51*1 
60, 
606 
61, 
54-1 
58-3 
58-9 
68-7 
55-6 
eSi 
70-7 
62*7 
57-0 
59-1 
56-0 
55-9 
63, 
58-5 
fe‘i 
59*8 
581 
57*8 
56-8 
58*5 
63*1 
59*1 
64*5 
66*2 
63-2 
58*2 
690 
59*1 
59*5 
60*2 
68*7 
63*4 
53-5 
59, 
51*1 
1833 
70-7 
1843 
19*6 
62-2 
64-4 
58-5 
58-7 
61-0 
53-3 
573 
51*9 
59-8 
626 
62-3 
556 
595 
57-2 
66-7 
59-3 
69-8 
692 
63-3 
56-8 
59-5 
54-0 
58-0 
65-7 
62-6 
66*4 
61*6 
52*9 
58*3 
56*8 
54*6 
54*7 
618 
59*4 
55-5 
65*8 
60*0 
678 
57-0 
64*0 
56*4 
67-5 
61*6 
52-8 
59-6 
61*9 
1833 
69-8 
1842 
17-9 
' 63 5 
61-4 
58-4 
57*9 
590 
54*5 
57*5 
53-5 
63-8 
66-2 
574 
540 
59-8 
562 
54-5 
63-8 
63-8 
69-9 
65-5 
53-9 
59-2 
52-4 
60*0 
66-6 
57-8 
65*6 
63-4 
56*1 
60*3 
59*8 
55*4 
53*0 
67-1 
59*8 
56*7 
62*1 
550 
60-8 
60*9 
65-5 
55*0 
646 
65*1 
54-0 
59, 
52-4 
1847 
69-9 
1843 
17-5 
1 66-0 
58-4 
61*3 
56-8 
59-5 
61-8 
57, 
51-2 
68-9 
678 
62-6 
51-6 
576 
60-7 
55-7 
47-7 
62*1 
59-8 
66-8 
53*5 
62-9 
50-3 
61-7 
671 
51-9 
61*6 
64*0 
57*9 
58*4 
58*3 
56-4 
56*7 
600 
57-6 
53*9 
63-8 
57*7 
58*0 
62*5 
64*5 
61*1 
65*3 
66*0 
61*7 
S9'7 
47-7 
1841 
68*9 
1834 
21*2 
| 59-8 
59-0 
59-6 
58-3 
58-7 
66-4 
58-0 
52-1 
64-7 
67-3 
56T 
52-9 
641 
62-5 
54-9 
48-5 
61-2 
58-7 
63-7 
64-5 
67-6 
51*6 
68-6 
64-8 
535 
69*6 
63*0 
58-9 
57*5 
63*7 
55*2 
68*2 
66-2 
58*3 
57*6 
67*4 
57-1 
53*9 
57-6 
63-5 
61*5 
59*5 
66*1 
670 
59'5 
48*6 
1841 
68*6 
1848 
20*1 
I 60-6 
59-2 
62-3 
59-1 
57-8 
59-6 
60-3 
56-7 
58-7 
67-1 
556 
54*5 
62-8 
611 
60-4 
49-3 
60*5 
64-3 
65-6 
53-2 
678 
50-5 
586 
62-3 
49-8 
67-3 
61*0 
57*5 
57-4 
60*4 
58-3 
610 
575 
56*4 
580 
65*1 
54*6 
58*1 
1841 
707 
1868 
21*4 
54-3 
58-1 
6G7 
591 
579 
55*0 
58-4 
58-4 
575 
651 
538 
61-9 
608 
60-7 
59-8 
60*5 
61*8 
71-5 
662 
6 o*o 
61-9 
1850 
71*5 
1868 
19-6 
J 5S-6 
57-9 
69-5 
58-6 
56-1 
575 
60, 
583 
569 
597 
57-0 
60-4 
516 
65-2 
58-1 
60-3 
56-5 
68-7 
65-9 
54-7 
64-0 
58-6 
62-1 
55-5 
50-3 
54*9 
64*4 
55*4 
55*3 
54*3 
57-8 
59-9 
62*5 
63*7 
60-3 
65-0 
62*7 
56-2 
68*5 
71-7 
60*3 
60*6 
60*1 
676 
59’9 
50-3 
1850 
71-7 
1865 
21*4 j 
1 55 8 
62-3 65 6 
60-2 
57-0 
54-6 
60-6 
589 
58-7 
57-7 
52-2 
63-9 
50-9 
63-8 
62-3 
61-5 
598 
66-8 
59-8 
58-1 
66-6 
57-4 
60-5 
59-2 
549 
53*9 
63*4 
65*8 
55*7 
55*4 
58*6 
63*1 
624 
60*6 
52*3 
582 
63*4 
57*6 
571 
65*6 
60-3 
62*5 
59*8 
65*8 
59-6 
60-9 
1838 
66*8 
1843 
15*9 I 
| 57-6 
620 
61-7 
61-8 
54-1 
56-7 
57, 
588 
60-5 
59-4 
49-1 
60-8 
51-1 
669 
59-1 
61-9 
58-5 
64-5 
56-3 
60-4 
67-2 
58-8 
57-7 
61-8 
53-0 
53*1 
63*9 
56*8 
55*0 
54*7 
61*6 
64*0 
64*9 
53*1 
47-4 
55*2 
48*1 
53*6 
531 
69-2 
60*4 
58-2 
62*6 
59*9 
58-5 
47-4 
1860 
69*2 
1865 
21-8 
1 54*4 
47*6 
1860 
695 
1865 
21-9 1 
] 55-9 
57-9 
63-2 
54-2 
51-7 
586 
56-3 
50-6 
55-7 
54-3 
54-5 
56*1 
54-7 
57-6 
50-8 
69-3 
57-8 
63-2 
60-2 
57-3 
65-2 
63-9 
47-2 
51-7 
53-8 
56*7 
56-4 
62*8 
62*3 
56*7 
58*4 
59*4 
635 
565 
47*9 
68-2 
57*2 
57*4 
49-7 
67-8 
54*5 
63*7 
63*5 
55*1 
57’5 
47*2 
1848 
69*3 
1841 
22-1 
I 56-9 
58*21 
59-4 
56-7 
54-9 
60-7 
60-0 
54*5 
55-6 
55-6 
54-1 
58-8 
55-2 
j 57 0 
51*5 
68-7 
59-2 
59-7 
61-5 
58-9 
62-0 
57-2 
50-5 
54*5 
523 
54*2 
57-6 
53-7 
65*0 
59-3 
55*2 
59*5 
65-0 
51-5 
54*7 
66*3 
61*3 
55*7 
55*7 
67-8 
58*7 
58-0 
61*8 
57-4 
57-8 
50*5 
1848 
68-7 
1841 
182 
I 57 8 
58-7 
1 52-7 
53-3 
56-5 
56-9 
^5-7 I 
601 
530 
59-2 
52-5 
534 
62° 
57-7 
49-6 
67-6 
62-5 
62-7 
640 
55-4 
60-6 
51-4 
51-9 
57'3 
52-2 
55-7 
54*6 
55*2 
61*2 
60*8 
52*4 
60*7 
63*4 
51*8 
567 
53*9 
61*1 
55*1 
53*7 
64*7 
56*7 
55*9 
58*0 
61*8 
56-8 
49-6 
1840 
67-6 
1841 
18*0 [ 
1 52-3 
55*8 
57-3 
61*7 
53*5 
53-3 
64*2 
621 
54*7 
56*5 
55*2 
62*8 
55*4 
54*8 
67-7 
55*6 
573 
57-8 
58*3 
57*2 
48-8 
ll84S 
67*7 
1865 
18*9 '■ 
1 54-3 
64-7 
51-7 
49-7 
57*3 
56-4 
59-2 
58*4 
63-2 
549 
53-6 
601 
60-4 
592 
50-5 
59-3 
597 
680 
662 
58-0 
63-1 
590 
52-4 
60-7 
59-0 
693 
51*9 
60*6 
66*3 
61*0 
57-1 
62*5 
66*4 
57*3 
56*7 
54*1 
57-9 
J >8*6 
57*7 
67*7 
55*2 
54-1 
57-3 
61*0 
587 
49-7 
1829 
68*0 
1843 
18*3 
160-9 
63-7 
57-0 
54-2 
53-8 
562 
59-9 
55-7 
66-3 
54-0 
558 
64-9 
60-7 
54-2 
49-7 
55-0 
62-7 
67-4 
63-2 
60*4 
64-8 
51-8 
54-4 
54-8 
56-4 
68-0 
48*7 
60*5 
62*5 
581 
59-0 
63*8 
63*4 
54*1 
60*5 
65*3 
53*7 
54*2 
54*3 
62*2 
541 
54*0 
62*2 
61*2 
58*1 
48-7 
1852 
67*4 
1843 
18*7 
56 5 
61-6 
55-9 
55*4 
53-9 
58-7 
540 
55-2 
63*5 
55-9 
541 
59-5 
57-4 
563 
49-9 
55-9 
57-5 
67-1 
52-2 
580 
56-8 
47-0 
52-2 
493 
58-1 
57*3 
576 
57*5 
59-9 
60*9 
52-0 
61*0 
56*1 
54*7 
50*1 
55*7 
57-5 
59*7 
54-6 
59*7 
54*7 
608 
59*3 
61*9 
56*7 
47*0 
1847 
67-1 
1843 
20*? 
65 8 
53-3 
57-5 
53-8 
58-2 
56-5 
47-9 
51-4 
65-3 
61-9 
52-5 
66*9 
57-2! 
; 55-7 
48-2 
59*5 
575 
64-8 
52-9 
51*1 
565 
52-0 
52*3 
52-3 
60-8 
57-4 
57-4 
58-1 
64*3 
59*8 
49-1 
55*9 
56*4 
47*9 
1832 
66-9 
1837 
19*0 
I 57-3 
51-5 
56-4 
54-4 
•55‘4 
570 
51-7 
53-2 
66-1 
60-6 
50-0 
62-2 
52-7 
56-5 
47*7 
65-5 
52-7 
62-3 
62-7 
55-7 
59-4 
51-8 
57-1 
54-1 
60-9 
56*2 
55*6 
52*9 
58*1 
59*0 
48*8 
56*5 
58*7 
550 
57-0 
54*2 
62-3 
52*8 
57*0 
626 
49*8 
57-1 
60*3 
520 
562 
47*7 
1840 
661 
1834 
18*4 
I 55-0 
580 
55-8 
54-9 
47-8 
580 
579 
55*0 
64-4 
599 
44-8 
57-9 
51*3 
51-6 
65-8 
61-6 
52-3 
61-9 
555 
573 
61*2 
55-2 
58-4 
56-3 
57-4 
57-2 
50*1 
54*3 
54*3 
59*0 
53-8 
57-6 
61*5 
52*5 
54*5 
53-6 
54*8 
51*4 
58*1 
58*2 
53*7 
54*8 
61*1 
52*6 
55’9 
44*8 
1836 
64-4 
1834 
19*6 
I 49 8 
54-9 
62-2 
55-4 
52-4 
54-9 
56-4 
i 58-0 
59*5 
64-0 
51*1 
59-9 
55-0 1 
53-2 
469 
61-4 
52-0 
60-3 
53-9 
53*1 
62*3 
59-3 
62-7 
58-5 
58-2 
57*4 
51*2 
60*4 
51*2 
58*8 
55-0 
59*1 
60*0 
55*3 
55*2 
56*5 
54*8 
52*6 
58-4 
55*8 
48*7 
56*6 
59*5 
57*3 
56-4 
469 1 
1840 
640 
1635 
17*1 
1 54-5 
54-8 
621 
55-9 
56*6 
60-3 
57-8 
566 
53-9 
61*7 
58-5 
56-5 
57-4 
52-9 
49-7 
563 
52-2 
59-8 
55-2 
449 
61-3 
59-5 
58-4 
56-5 
59*1 
57-0 
66*6 
55*1 
58*3 
64*8 
55-4 
59*7 
62*5 
61*0 
48-4 
56*0 
52*5 
483 
57*9 
56*5 
51-1 
55-0 
57*1 
61*2 
56-5 • 
44-9 
1845 
64-8 
1855 1 
19-9 
1 59-5 
55-3 
630 
52-7 
52*7 
621 
60-2 
58-7 
53-8 
55-2 
60-6 
52-0 
52-3 
561 
52-6 
57-1 
54-8 
56-9 
53-1 
488 
591 
52-3 
59-3 
56-5 
58*0 
58*2 
55*3 
48-5 
57*2 
54*3 
54*6 
61*9 
53*9 
647 
483 
52*8 
57*4 
48*8 
57-7 
60*4 
52*7 
51*1 
581 
65*5 
56-0 
48*3 
1860 
65*5 
1869 1 
17-2 
I 60 S 
57-1 
62-9 
50-8 
51-5 
61-7 
610 
58-5 
58-9 
54-0 
62-2 
51-3 i 
500! 
60-2 
47-6 
57-1 
56-5 
54-0 
51-3 
52-0 
574 
56-9 
61-5 
55-6 
58*0 
55*5 
55*5 
43*6 
51*0 
58*9 
51*7 
55*8 
60*3 
52*0 
48*6 
54-2 
62-8 
557 1 
43*6 
1860 
62-9 
1828 
19-3 
I 63 8 
62-8 j 
66-7 
54-8 
51-9 
59-2 
601 
54*9 
59-4 
54-9 
65-3 
50-9 
52-8 
66-4 
528 
56-5 
55*7 
49-7 
52-0 
51-4 
58-7 
51-0 
58-0 
57-4 
54*4 
50*1 
54-2 
49-1 
61*6 
47-6 
53-8 
58*4 
59*4 
59*6 
49*7 
490 
61*4 
49*4 
55*0 
61*0 
57*3 
52*6 
58-8 
581 
55*6 
47-6 
1855 
66-7 
1828 | 
19-1 
01-2 
62-6 
570 
55-0 
56-2 
62-3 
59-6 
53-7 
59-9 
542 
59-2 
55-2 
50-3 
55*6 
66-0 
59-7 
52-3 
46-5 
51-8 
54*3 
58*1 
45-3 
582 
61*7 
57*6 
51*7 
64*7 
54*7 
53*7 
59*3 
61*3 
61*4 
58*0 
55*6 
560 
50*8 
58*8 
47*3 
53*8 
59*3 
57*3 
530 
576 
56*7 
55-8 
45*3 
1847 
62-6 1 
1827 
17*3 
lei-9 
59*3 
59-5 
48-8 
58-9 
64-8 
59-2 
53-7 
598 
50’5 
54-1 
51-3 
53-6 
52-6 
53-6 
61*1 
52-8 
47-5 
63-9 
52-2 
538 
47-4 
55-6 
60-3 
54*1 
51*2 
55*6 
601 
54*4 
62*2 
52*2 
56*6 
56*1 
56*4 
50*9 
55*7 
60*3 
49*6 
54*4 
54*3 
59*9 
57*2 
58-0 
58-1 
55’5. 
47*4 
1847 
64-8 
1831 
17*4 
I 631 
58-2 
60*6 
460 
540 
63-4 
61-6 
53-6 
559 
57-7 
52-9 
51-4 
562 
51*4 
50-9 
59*0 
52-8 
510 
49-9 
53-0 
51-4 
54-5 
54-2 
62-0 
54*0 
19*2 
53*3 
56*2 
55*1 
62*8 
53*8 
53*9 
63*7 
54*8 
51*8 
56*0 
62*3 
47*8 
55*4 
57-5 
61*0 
56*0 
58*5 
65-4 
55-8 
46*0 
1829 
654 
1869 
19*4 
I 62-4 
; 60-7 
56-1 
47-5 
49-7 
64*9 
59-4 
51-9 
53-4 
60-3 
44*8 
56-3 
587 
53-8 
521 
56-0 
50-6 
60-8 
48-6 
50-8 
50-4 
54-4 
57-0 
57-3 
50*6 
54*4 
511 
51*0 
54*9 
587 
53*4 
56*5 
56*7 
57-0 
49*3 
61*2 
63*9 
SI" 3 
55*1 
53*4 
67-4 
57*4 
562 
60*4 
55*2 
44*8 
1836 
64-9 
1831 
20*1 
I 59 0 
59-5 
602 
55-1 
5,6 
58, 
577 
55*1 
598 
50, 
54-9 
56-9 
562 
578 
540 
50, 
58-1 
61-8 
58-5 
54-5 
6!, 
54-2 
56-7 
58-5 
65*7 
66*7 
5„ 
56*1 
67*9 
56 ! 9 
55*2 
50. 
60*5 
56, 
53*3 
57-0 
57*9 
54*5 
57*0 
62*7 
567 
58-5 
00*9 
59*8 
57*6 
Mean Temperature of the coldest day in September in the years X826 to 1869 was 43 c ,, and it took plaeo on the 25th day in the year 1860, 
Mean Temperature of the hottest day in September in the years 1826 to 1869 was 71°*7. and it took place on the 8th day in the year 1866. 
oifferpnce between these numbers is 28°*1, and it represents the extreme difference between the Mean Temperature of two duj-s in the month of September 
i the greatest difference y 
, and in the year 1841 it was 69°*3 ; the difference between these numbers is 22°*1. 
The day of the month whose Mean Temperature has been subjected to the least difference was tin 
and in the year 1843 it was 66°*8; the difference between these numbers is 15°*9. 
3 the 12th; in the year 1848 its Mean Temperature was 
Ith ; in the year 1838 its Mean Temperature was 50 c -9; 
