12 HORN EXPEDITION — PHYSICAL GEOGRAPHY. 



several small creeks, notably Redbank and Rockybar Creeks, both of which take 

 their rise in th(! northern portion of the McDonnell Ranges, and, going south, 

 force their way through narrow gorges in these ranges. The Finke flows south- 

 wards from the junction of Ormiston Creek and the Davenport, and at twelve 

 miles from that junction, measured in a direct line, it is joined on the west by 

 Rudall Creek, which rises in the south-western extremity of the south McDonnell 

 Range, about 132° E. longitude, and which flows almost due east to the Finke. 



Bending more towards the east, the Finke flows past the Mission Station 

 (Hermannsburg), entering the KrichauflT Range one mile south of this point. 

 After a meandering course of from ten to fifteen miles through this range in a 

 general S.S.E. direction, it is joined on the east by an important tributary, known 

 as Ellery Creek. This latter takes its rise on the northern edge of the 

 McDonnell Ranges, about 132° 50' E. longitude, and flowing S.S.W., forces a 

 passage through two quartzite ridges on its way to join the Finke. On its exit 

 from the Krichauft' and James Ranges, the Finke is joined on the west by Ilpilla 

 Creek, a small tributary having its source in the James Range. 



From this point the general course of the river is tS.E. and is extremely 

 tortuous. When it reaches 21° 45' S. latitude and 133° 22' E. longitude it is 

 joined on the west by a very important tributary, the Palmer. The Palmer takes 

 its rise on the northern slope of the James Range, about 132° E. longitude and 

 23° lO' 8. latitude., and flows in a general S.E. direction through this range for 

 sixty miles, when it is joined on the west by an equally important tributary, the 

 Walker. This latter has its source in the north-western extremity of Gardiner 

 Range, and flows with a general E.S.E. course. The united streams, known as 

 the Palmei', flow in an E.S.E. direction to junction with the Finke, 100 miles from 

 the point where the Walker junctioned with the Palmer. 



Petermann Creek, of less importance than the above-mentioned tributaries, 

 takes its rise in what is known as Petermann Pound, a plain nearly Ave miles in 

 diameter encircled by a line of hills about 400 to 500 feet high. This semicircle 

 of hills unites George Gill Range with a western extension of that portion of the 

 James Range known as the Station Range. From the Petermann Pound, Peter- 

 mann Creek flows about due east, and occupies a longitudinal valley between 

 George Gill and Levi Ranges on the south and a portion of the James Range on 

 the north. In its passage eastwards it is joined by numerous small creeks flowing 

 from the ranges on each side, one of the largest being Trickett Creek, which takes 

 its rise on the south-east face of George Gill Range, and flows N.E. The valley of 



