APPENDIX NO. XII 
425 
Synojosis of mean monthly readings of atmospheric temperature and 
pressure, and of observed maxima and minima temperatures. 
Date. 
Temperature of Air. 
Barometer. 
Attached 
Ther¬ 
mometer. 
Mean. 
Maximum. 
Minimum. 
1853, Juno. 
July. 
August. 
September. 
October. 
November. 
December.. 
1854, January. 
February . j. 
March. 
April.... 
May.. 
Juno. . . 
July.. 
August. 
September.. 
October. 
November.. 
December.. 
1855, January. 
February. 
March. 
April. 
Autumn, (1853). 
Winter, (1853-54). 
Spring, (1854). 
Summer, (1854). 
Autumn. (1854).. 
Winter, (1854-55). 
O 
4-48-63 
- -37-83 
- -33-41 
- -17-16 
- - 0-55 
—23-01 
—25-99 
—30*24 
—33 60 
—38-09 
- 8'60 
--12-89 
- -29-23 
- -38-40 
- -31-35 
-- 9-81 
—1054 
—23-03 
—28‘til 
—21-21 
—33-97 
—14-00 
- 1-77 
—29-94 
—11-27 
4-32-99 
- 7-92 
—29*19 
o 
H70-0 
-51-0 
-40-0 
■32-0 
-17-8 
- 0-2 
-15*8 
-11-0 
-11-3 
- 0-9 
-14-3 
-89*4 
-41-9 
-53-9 
-26-6 
-22*9 
- 4-3 
- 8-4 
‘•25*2 
-19-6 
- 2-3 
- 8-9 
-32-0 
-15*8 
-39-4 
-53-9 
-26-6 
-25*2 
o 
4-35-0 
4-30*0 
+25-0 
— 2-2 
—23*7 
—43-2 
—45*7 
—59*9 
—68-0 
—50-6 
—43-0 
— 8-7 
4-17*7 
4-27-6 
4*19*1 
— 8-9 
—41-0 
—19-9 
—Cl-4 
—69-3 
—53-9 
—56*1 
-42*3 
—43*2 
—68-0 
—55-0 
+17*7 
-49-9 
—09-3 
Inch. 
29-890 
29*727 
29-061 
29*678 
29*801 
29-726 
29-842 
29*461 
29*642 
29*760 
29-981 
29-970 
29-780 
29-784 
29-711 
29*082 
29*743 
29-855 
29- 728 
30- 141 
30-095 
29*795 
29-904 
29-735 
29-648 
29-904 
29-768 
29-760 
29-988 
o 
4-55-73 
68-83 
68- 92 
55-86 
69- 76 
34-35 
36- 36 
29-66 
24-69 
14-52 
29- 71 
61-02 
53-98 
40- 07 
37- 66 
41- 22 
51-60 
51-98 
49-98 
49- 31 
51*88 
67*17 
59-93 
53-32 
30- 24 
31- 95 
46-10 
4S-27 
50- 39 
Difference, (Summer and ‘Winter,) . 62-93° I Mean of tho year 1S54. 
“ warmest and coldest month, 76-49 Temp, of Air. Barometer. Attached Therm. 
“ maximum and minimum.... 123 20 | — 5-01° 29*7581 inch. +40*27° 
The maximum of temperature vraa + 53-9°, and occurred on the 4th of July, 1854. 
The minimum in 1854 was —68-0°, and occurred on the 5th of February. 
In 1855 it was —69-3° on the 7th of January. 
From September, 1853, to April, 1855, (inclusive.) tho observations were made at nearly the 
sarno place; hence the means of tho same months in 1803, 1854, aud 1855, would be combined 
for tho mean annual temperature and the mean annual height of barometer given in the follow- 
ing table. _ 
Lat. 78° 37' N., Ion. 70° 40' W. from Greenwich. 
Month. 
Mean Tempera¬ 
ture of Air. 
Barometer. 
Attached 
Thermometer. 
o 
inch. 
o 
January. 
—29-42 
29-801 
+39-48 
February.. 
—27-40 
29-868 ' 
38-29 
March. 
—30-03 
28-777 
40-84 
April... 
—11-30 
29-942 
44-82 
May. 
4-12-89 
29-970 
51-62 
June. 
4-29-23 
29-780 
53-98 
July. 
4-38-40 
29-784 
40-67 
August. 
4-31-35 
29-711 
37-G6 
September. 
+13-48 
29-6S0 
48-54 
October. 
— 6-00 
29-772 
60-68 
November. 
—23-02 
29-790 
43-16 
December.. 
—31-86 
29-785 
43-17 
Year... 
— 3-22 
29-805 
+45-74 
Spring... 
Autumn. 
Summer.. 
Winter. 
—11-48 
— 4-85 
+32-99 
—29-56 
29-890 
29-747 
29-758 
29-818 
45- 76 
60-79 
46- 10 
40-31 
The preceding tables show that the mean temperature of the year 1854 was 1-79° colder than 
the mean temperature of tho year as derived from twenty months’ observations. 
