51 



extending for quite a mile across the mesozoic deposits. This 

 channel is about ten feet deep near the junction of the old and 

 new beds, and therefore I fully expected to find fossils of some 

 kind or other, but so far as I could discover the beds were non- 

 f ossilif erous. From the top of the nearest peak we obtained a 

 very fine view of the detached hills constituting the western 

 part of the range, and also of the vast plain stretching east- 

 erly. As far as the eye could reach to the west nothing but 

 hill beyond hill was to be seen presenting their weathered and 

 shivered peaks to the setting sun ; whilst to the east the view 

 before us was a vast plain of unusual sterility, composed of 

 secondary strata. The strike of the primitive rocks was found 

 to be 30° west of south and east of north ; dip, Go° westerly ; 

 estimated height above the level of the eastern plain, about 

 200 feet. The spring, which by no means can be called a strong 

 one, wells out at the junction of a band of marble or primit- 

 ive limestone, where the old beds join the new. A. con- 

 siderable amount of calcareous material (travertine) has been 

 deposited around the spring at a former period. The water, 

 though slightly tainted Avith mineral ingredients, is, neverthe- 

 less, very good drinking water. 



I ascended another of the eastern peaks of the Mount Mar- 

 garet Range, which stands about 25 feet higher, and situated 

 about half a mile north of the one we had previously ascended. 

 Prom the difference between the trend of the range and the 

 strike of the strata the material of which this peak is composed 

 is entirely covered with secondary beds ere they reach so far 

 south as the spring, and I also observed that the rocks were 

 becoming more gritty in character. I ascended another peak 

 situated about a quarter of a mile further north, and found it 

 composed of rocks still more gritty and harder than the summit 

 I had left. From the top of this peak an excellent view of 

 the surrounding country was obtained, and the bearings I 

 found much similar to those we had taken the previous night. 

 Following up the creek in the neighbourhood I came upon a 

 stratum of the prevailing quartzite, metamorphosed so highly 

 as to present the appearance of a quartz rock. 



Analyses of Samples of "Water. 

 Several samples of water taken from the springs mentioned 

 in this paper were submitted for analysis to Mr. A. Thomas, 

 F.C.S., analytical chemist, with the following results. All 

 the wells referred to except one (Mount Margaret Spring) are 

 situated on Messrs. Hogarth & Warren's run : — 



