THERMOMETRICAL OBSERVATIONS AT POINT BARROW. 
183, 
TasiLEe XVIII.—Showing the Mean Temperature of every Hour for the 
- month of June, part of the month of July and for June, and the twelve 
first days of July combined, from observations taken hourly with a black- 
ened Thermometer at the ‘ Plover’s’ winter quarters, Point Barrow. 
: 1853. 
Hour: 
June. July 22nd. oe any Say. 
AM. I 34°50 +35°72 +35°02 
: 2 36°26 36°90 36°35 
3 38°66 39°09 39°62 
; 4 43°43 42°54 44°19 
; 5 48°66 43°31 48°14 
6 53°90 46°59 53°28 
7 59°26 52°59 58°57 
8 63°00 54.90 61°92 
: 9 66°00 58°36 64°67 
: 10 67°66 62°31 65°21 
ce 72°03 65°00 | 70°30 
7 Noon, 12 71°86 64°99 70°30 
\ 
P.M. I 72°16 63°31 69°83 
2 71°43 62°72 69°30 
3 69°40 65°81 | 68-21 
4 67°56 63°18 65°95 
5 63°14. 56°13 61°07 
6 5810 50°68 56°04 
7 54°13 52°09 53°38 
8 49°06 46°13 48°40 
9 47°06 37°31 45°45 
10 42°26 37°40 41°26 
11 37°20 35°63 37°12 
12 36°16 34°54 35°95 
Means 54°994 54°120 
Hours. 
WO CON AuPwW Nw: 
1z and 12 
Means 
54°01 
June. 
+53°33 
53°85 
54°03 
55°50 
54°50 
56°00 
56°70 
56°03 
56°53 
54°80 
54°61 
54°994 | 
1853. 
July 22nd. 
| 54°120 
Taste XIX.—Showing the Mean Temperature of every Pair of similar 
Hours in first and third columns of Table XVIII. 
June and July. 
+52°42 
52°57 
53°41 
54°57 
54°55 
54°86 
55°47 
55°16 
55°06 
53°23 
53°71 
53°12 
Highest single temperature in the sun + 106° on 7th June 1853. 
