BY HENRY G. STOKES, F.G.S. 
47 
fortymiles soutliwarJ, is seen to gradually close in towards thecoast 
near Brisbane. The Glasshouse Mountains, nine in number, 
.are contained within an area of about eight square miles. A line, 
four miles in length, drawn due west from the railway station, 
passes through Ngungun, Coonowrin (1,170 feet), and Beerwah 
(1,760 feet), and these are about equidistant from one another. 
Tunbubudla (1,020 feet) is situated four and a-quarter miles to 
the south of Coonowrin, and three and a-half miles further 
south from it is Mikeleebumulgrai. Eeturning to Ngungun, 
two and a-half miles south of it, lies Tibrogargan and Ewan ; two 
miles to the south of these hills, Beerburrum. 
They have an average elevation of 1,000 feet above sea 
level, Beerwah being 1,760 feet and Ewan 560 feet above 
“McGregor’s.” They also lie in two parallel lines to the 
eoast, and possess many features in common. When ^dewed 
from a distance Coonowrin presents the appearance of a 
truncated cone resting on a dome-shaped base, the apex slightly 
overhanging to the west. The truncated portion rises abruptly 
■on three sides showing columnar cliffs, the columns inclining 
inwards in places towards its summit. Its north-west flank is, 
however, not so steep, and here a succession of small ledges 
appear to offer a reasonable prospect of success to anyone who 
may be tempted to try the ascent. On the south-west flank of 
the mountain a recent landslip exposes a section illustrating 
the manner in which the igneous rock has pierced and involved 
the sedimentary rocks resting at its base, proving that the 
volcanic eruptions of this locality are more recent than the 
Ipswich beds. 
Ewan resembles a Japanese fan sloping towards the range, 
the handle consisting of a long narrow ridge with precipitous 
sides, ending in a perpendicular escarpment in the opposite 
direction, some 560 feet above the plain. The others were not 
visited during our trip, but they appear from a distance to be ot 
the same type as those already described. There is reason lor 
concluding also that they are not only connected with each 
other but are in reality offshoots from the great eruptive 
trachytes of the Main Dividing Eange, so prominent a leature 
in the southern portion of the Moreton district. n 
