5 
5th, but a heavy emission of pyroc la sties continued, mostly 
accompanied by rolling explosions but featuring, on the^th, loud 
pounding nokies like those of a switch locomotive. On August 6 
and 7 compression waves made pulsating flashes that could h>, 
seen over the top of the crater for great distances. During sn 
absence of the writers, Seder Ariel Hernandez Velasco reported. 
that the tubular eruption continued from August 9 to 13, with an 
lifted s$h 
asb~*nd-b arged column that on the 13th r©#e as high as 3 
kilometers, and with reports that on the 11th end 11th were 
heard as far away as the city of Uru&pan. 
The phase of strong activity lasted through the 25th, but 
of varying nature, featuring characteristics of both the tubular 
and silent eruptions. It ranged fro® long .periods of silence, 
ss on the 14th and 15th, through brief but earth-shaking reports 
at irregular intervals of several minutes, as on the 22 nd, to 
railing thunderous explosions lasting 4 or 5 seconds end closely 
spaced, as on the 25th. All the eruptive variations during this 
period produced greet amounts of ash. East winds typical of the 
rainy season carried, almost all the ash westward and northwest- 
ward from the cone. On the 24th the column of vapors was dropping 
appreciable loads of dust as far as 50 Kilometers to the north- 
west. Sew ash was deposited every day at the Lower Capita near 
fan Juan, making turbid the rain water that was collected from 
the roof. 
both Jar! tiro and fan Juan frequently 
showed several millimeters of ash from one observation to the next. 
August 26 dawned with a gaseous explosion. The steam- 
e -cape sound war continuous but variable in intensity throughout 
