Took bearings from a very high range close by; Mount Davies, Mount Edwin, and Mount Hardy being visible.
The Mann Ranges are very high and rough, and are composed of reddish granite.

They are the highest ranges met with since leaving Mount Hale and Mount Gould, on the Murchison.

Found camp F 81 to be in latitude 26 degrees 3 minutes 20 seconds South by meridian altitude of Altair and Vega, and longitude about 129 degrees 53 minutes East.
September 1st.
Continuing about east along the foot of the Mann Ranges for about fifteen miles, came to Mr.Gosse's bivouac of October 11th, but could find no water; a well that had been dug in the sand was dry.

Followed up the gully about a mile, and came to a small spring, and camped.

After draining it out, found there was no supply, but were fortunate enough to find some large rock holes with water--no doubt soakages from the rocks--but they were in an almost inaccessible spot, and it was with great difficulty we managed to water the horses.