31st. Got an early start and took the horses to the water found by Windich yesterday, where they could help themselves. Steered East-North-East about, over level country; spinifex generally, studded with desert oaks, with limestone and snail-shells on surface for about twenty miles. Reached the Mann Ranges. Before we reached the ranges we struck Mr. Gosse's track, and followed it along, and shortly came to a very large and recent encampment of the natives. There must have been a hundred camped here about a week ago. Found two small springs not far off, but not strong enough to water all our horses; but we soon found some fine springy pools in a gully about half a mile further on, where Mr. Gosse also had been camped, and marked a tree with a broad arrow. I marked on the same tree F 81, being our 81st camp from Geraldton. Mr. Gosse's return track leaves his outward track at this spot. I intend following his return track and make in to the telegraph line, down the Alberga, and on to the Peake. There is abundance of water at this place, which I have no doubt is permanent, as there are four springs within half a mile of one another, but three are very small. 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. One horse fell and nearly lost his life. Country passed over to-day was poorly grassed, and spinifex patches here and there. Large and recent native encampments seen in two places to-day. Latitude 26 degrees 4 minutes 45 seconds South. Marked a tree F 82, close to our bivouac in bed of gully.