Parieutin - page 4 
brilliant incandescent cracks slowly disintegrating. Large incandescent 
fragments rolled from the front and there were numerous streams of small 
incandescent fragments running down its surface which were difficult to 
distinguish from true liquid flow. A few small streamlets of true liquid 
also flowed out. 
About 15 minutes after our arrival at the spot, an area about 2 meters 
in diameter became more incandescent and began to work like thick dough. 
This continued for about a half minute when it began to flow like thick 
molasses and within a few minutes a front, 5 meters across was in liquid 
motion, and flowed like molasses down the slope. The lave stream had a 
light golden yellow color and flowed without noise or odor, casting a pink 
and yellow glow upon the sparse vapors that arose from its surface and light- 
ing up the night like bright moonlight. A curious phenomenon was the 
ejection of incandescent pebbles from the surface of the flow with a 
whistling noise, like that of a skyrocket. 
The flow began behind a ridge, the opposite side of which showed pressure 
ridges for a distance of 50 meters* At the edge of the lava ilow, about oO 
meters from its apparent source was a peak of lava, with raucn incandescent 
areas, and which was ina state of disintegration* 
8:30 - The actual flow of liquid lava began. 
10:00 — We returned to the flow after coming to tne cesixa for films. 
By then the flow had spread over a large area, 100 meters or more across. 
The flow was slower, although another overriding it was advancing more rapidly. 
The flow front was about 2 to 2 l/2 meters high. The upper surface had al- 
ready darkened, but the advancing front was red. Copious fumes were given 
off from the hotter area behind, and the glowing lava cast a pink and yellow 
glow upon them. 
At the hot hill observed a curious occurrence, a small whirlwind, in 
very rapid circular motion, giving off a whistling noise. Thougat iv was 
escaping gases, hut it began to move, covering an area of 5 x 5 me tarsi- 
lasted about 2 minutes. 
June 11 
Fairly clear in the morning, but clouds forming early. 
Rained at noon* 
Smoke plume normal* 
From the casita very little apparent activity at tne two ilowo# 
No fumes from the first , and little from the second* ^ 
2 pm ^ Activity from the cone decreased* Almost continuous growls, buu 
little smoke, sometimes none. Opposite side of cone visiole tnrough the gap 
Fairly large blocks thrown up, but none aboue the crater rim* 
3:15 same, but glow of hot ejectamenta frequently visible in crater gap* 
Observed a slender brown dust devil over flow $3* 
3 : 20 — Activity increased somewhat with more incandescent blocKb tnrown 
out* It seems that the previous apparent lack of relationship between blasts 
and rock ejecta is that in many of the rocks did not reach the crater rim* 
3:25 « Observed two blasts, one that followed the other one second^ after 
The first from center of the crater ejected hot blocks, the second from the 
west portion, thick black smoke* 
