HAWAIL 169 
it stands up in all its majesty, and the observer feels the oppressive 
sublimity of the simple mountain dome. 
The accompanying map of a part of Hawaii* will assist in convey- 
ing an idea of its form, the position of the crater at summit, and of 
Kilauea on its east-southeastern flank, 3970 feet above the sea. Still 
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more definite information respecting the gentleness of its slopes, may 
be obtained from a few simple calculations. 
The difference of height between Kilauea and the summit is 9790 
feet, and the distance in statute miles from Kilauea horizontally to 
the axis of the cone is 15-9 statute miles. From these data, we obtain 
the small angle 6° 42’ for the average inclination from Iilauea to the 
summit. 
Again, from Punaluu, the point on the southeastern coast nearest 
the summit, (see the general chart of the Islands,) to the same axis, 
is 19-8 miles, which gives for the average slope on this side 7° 33’. 
From Honakua, just south of Kealakekua, on the west side of the 
island, to the same axis, the distance is 26 miles, affording an average 
inclination for the west slope of 5° 45’. From Kealakekua, the dis- 
tance is 274 miles, giving an inclination of 5° 28’. 
We may hence assume 6° 30’ as the average inclination of the 
great dome. ‘This corresponds with a base to the dome of forty-five 
and three-fourths miles. We may consider this the size of the main 
* This map is reduced from the chart published with the Narrative of the Expedition. 
43 
