98 FS. Dodge—Kilauea after the Eruption of 18886. 
through the black crust and flow a short distance, when it 
quickly became black and hard. These little outbreaks and 
flows of lava were taking place in various places on the surface 
of the lake during the whole afternoon. In the evening at 7:15 
a very large outburst of lava came from the lake immediately 
below Halema’uma’u W, and, flowing in the direction of 
‘‘Smoke Jet,” overspread a large portion of the surface. After 
this the outflows were quite frequerit and large during the 
next half hour. Little noise could be heard from our position. 
The “Smoke Jet” was pouring out large volumes of bluish 
smoke, depositing sulphur about the place of exit. 
At the time of my second visit, two days later, I again took 
my position for watching the lake at Halema’uma’u A. There 
was evidently greater activity. The surface of the lake had 
been visibly raised by the constant outpouring and hardening 
of lava. At this time there was a great deal of noise, both of 
puffing and swashing. On the surface of the lake, at a point 
near the wall immediately below Halema’uma’u W, there was 
a place six or eight feet long and four or five feet broad, where 
the red-hot lava was in constant view, boiling over continuously 
and flowing away, and occasionally shooting up several feet 
thto the air. 
About the middle of July lava appeared in Halema’uma’u 
just beneath the wall at Halema’uma’u A. I saw the fresh 
pahoehoe at this particular place, but there was no further evi- 
dence of renewed activity at this point during my stay. 
IIl.— Report to Prof. W. D. Alexander, of Mr. Frank 8S. Dover, 
Assistant Surveyor and Draughtsman, made Nov. 15, on the 
Survey of Kilauea in the last week of September and the first 
of October, 1886. With Plate II. 
I herewith.submit the following report of my visit to 
Kilauea, Hawaii, for the purpose of surveying the crater and 
vicinity, under the direction of the Bureau of Surveying. .. . 
Leaving Hilo by the steamer Kinau, on ‘the evening of Sept. 
28d, ’86, I landed at Keauhou early the following morning, 
and reached the Volcano House shortly before noon. The 
weather being favorable for surveying, a part of the afternoon 
was devoted to triangulation for the purpose of determining 
what changes had taken place since the last survey was made 
by Mr. J. S. Emerson, in March and April. From the trian- 
gulation I concluded that no material change had occurred in 
the general outline of the sunken district, covering the sites of 
Halema’uma’u and the so-called ‘‘ New Lake.” 
At the very first opportunity I took careful observations to 
ascertain the height of two hills which had formed in the, 
