170 Capt. Sabine’s experiments to determine the 
the space between the tent and the marquee for the purpose of 
regulating the temperature. The weather from the 17th, which 
was the day of landing, to the 20th, when the instruments 
were re-embarked, was extremely clear and fine, admitting of 
transit observations on the 18th, 19th, and 20th ; the details 
of which, with the rate of the clock in the intervals, are given 
in the annexed Table. The latitude of the tents was ascer- 
tained by Captain Parry, by a mean of meridian altitudes of 
the sun, observed with a sextant and artificial horizon, 
70° 26' 17" N. ; the elevation above the sea was measured 
44 feet; the temperatures and arcs of vibration were ob- 
served every second hour, the daily mean being inserted in 
the Table. 
Clock 2 at Hare Island: Barom. Mean height 30,1 inches. 
1818. 
Observ. Times 
of G ’s trans. 
Mean time of 
App. noon. 
Clock slow. 
Daily 
gain. 
Mean 
arc. 
Mean 
temp. 
Corrections. 
Corrected 
vibrations. 
Arc. 
Temp. 
Elev. 
Buoy. 
Junei8 
19 
20 
h, m. s. 
23.48.35,58 
23.51.22 
2 3 - 54 -° 7 - 3 I 
h. m. s. 
0 00.35,06 
0.00.47,86 
0.01.00,66 
m. s. 
1 1.59,48 
9.25,86 
6 - 53>35 
153,62 
152,51 
*•783 
1.7825 
43’9 
45 >6 
+ 
5> 2 39 
5,236 
2,664 
>,925 
+ 
0,1826 
+ 
6,448 
86562,8256 
86562,45 16 
Meanj 86562,6386 
Being 86562,6386 vibrations in a mean solar day, in vacuo, 
at the level of the sea ; the temperature being 50°. 
London. 
No other opportunity of pursuing these experiments pre- 
sented itself during the remainder of the voyage; the ships 
