zz Eum i On ee P 
FEBRUARY 26, 1912] A FascicLE oF Parawan Fras 1365 
of from 2 to 4 feet, depending on the tide. After crossing the 
bar, deeper water is found in the short channel where the river cros- 
ses the beach, and immediately behind the beach is a lagoon about 
120 meters long by 25 to 30 meters wide, and with depths of 6 
to 8 feet. The river empties into the upper end of this lagoon 
through an irregular arched opening at the base of a vertical 
cliff. The arch is some 6 or 7 meters in height, and roughly three 
times this in width. Just inside the entrance the channel is 
broken by columns and longitudinal knife edges hanging from 
the roof, which divide it into numerous small openings just 
capable of passing a boat. Fifty meters upstream these ob- 
structions disappear, leaving a single clear channel, but for the 
first 400 or 500 meters there are numerous small side openings 
or pockets. At a distance of 200 meters daylight is seen through 
one of these crevices, and at 500 meters the channel opens into 
the first prominent chamber, containing columns, stalactites, and 
one very prominent stalagmite. 
“The next 1000 meters is characterized by a long straight 
channel, with an easy curve near its center. This channel, 
although rich in local detail, is strikingly regular in the main 
outlines, which consist of straight vertical bands curving upward 
into inclined roof sides which meet in a central ridge modified 
at its apex by small parallel hanging blades. Throughout this 
channel are numerous beautiful forms of stalactites, resembling 
chandeliers, bulbs, plates and hanging points and blades, but no 
stalagmites, as the entire width of the cavern is occupied by 
the river. 
“At 1500 meters this tunnel section continues in an elevated 
prolongation extending upward beyond the river, which at this 
point flows through an areh about 2 meters high on the west 
side of the channel. On the east side of the channel, opposite 
this arch, and just inside the beginning of the elevated cavern, 
a small waterfall, which attracts attention through its volume 
of sound, is hidden in a narrow crevice. After passing under 
the arch the section becomes more broken, consisting of irregular 
chambers for about 200 meters, when another low arch is en- 
countered, beyond which the chambers become larger. 
"Continuing upstream for the next 1000 meters, or to a point 
about 2700 meters from the entrance, a large chamber is found, 
where the stream abruptly turns, first to the right, and then to 
