631 
“ A fairly large quantity of gas, whicli has a slightly sulphurous odour, is 
constantly being given off with the water. _ m vi 
" For some distance round the orifice (j;), the sand still retains a considerable 
portion of the heat derived from the percolation of the heated water through it. In 
some places it is nearly impossible to place one’s hand m a hole dug in the sand to a 
depth of about eight inches. A considerable portion of the water from the mam 
orifice still finds its way down the creek, by percolation through the sand without even 
rising to the surface. . 
“No deposit exists around the mouth, but many of the pebbles in the more 
immediate vicinity of the overflow are covered with an exceedingly thin white coating. 
“ The outlet (y) is on the bank of the creek, and a fair quantity of water rises 
and is allowed to overflow into (x), but no gas appears to be emitted from this outlet. 
“ The pool (z) is distant about twenty feet south of ( y). It is about three teet 
by two feet across, and about ten to twelve inches deep. The temperature o t e 
water is much below that of the other two sources, and the quantity of overflowing 
water is not nearly so great. The bottom of the pool is covered with a fine mud. 
Bubbles of gas rise almost continuously through the water. ^ 
“About thirty feet further south, on the bank of the creek, another pool similar 
to the last occurs. The water has a temperature slightly exceeding that of the 
surrounding air. Very little water overflows, and no gas is emitted.” 
Mitchell Biver Mud Springs.— In his Paper already quoted, Mr. E. Palmer 
mentions some springs, with similar characteristics to those on the Flinders, as occurring 
“ about ten miles north of Gamboola Station, on the Mitchell Biver, with Pandanus 
growing very plentifully through them,” and gives the following Analysis by Mr. Eobert 
Mar, Government Analyst, of “ a rather earthy sample of the saline incrustation from 
these springs Per cent. 
, 37'54 
2'8 
; 219 
Sand ^ ■’ 
“ The acids are undetermined, hut carbonic acid is chiefly represented. The water 
of the springs is alkaline carbonated.” „ tt , c • j 
InnisMllen Rot Springs.— E. Palmer, in his Paper on Hot Springs and 
Mud Eruptions,” already quoted, refers to “some small ones” on the Barcoo, below 
Inniskillen (between Tambo and Blackall). „-or>rvrc! jt 
Between Langlo Downs and Whitechapel Creek (approx. Lat. 25 30 S. and Lon„. 
145° 50' E.), I am informed by Mr. G. Neville Griffiths, several “extinct mud springs 
have left mounds measuring about thirty feet in diameter at the base and about thirteen 
Angy Springs, near Boulia, Lat. 22° 55' S., Long. 14^0 25 E.— I am also informed 
by Mr. Griffiths that at Angy, about twenty-seven miles east of_ Boulia, between 
■\krrenda Creek and the Hamilton Biver, twenty or thirty strong springs are met with, 
forming large mounds of white soda. The water is clear and of normal temperature. 
Tharqomindah Rot Springs.— Hot mud springs are known to occur in e 
neighbourhood of Thargomindah, but I am unable to give any description 
a letter addressed to me on 2Hh September. 1889, the late Mr. C. S. Wilkinson 
referred to a ridge of granite and gneiss, standing island-like in the Cretaceous 
area and added:— “This ridge lies chiefly on your side of the border, and is siirrounde 
Sid springs, oneof whihli is a thermal spring. Probably the water is coming up 
along the line of junction of the granite and Cretaceous beds. 
