3RD FEBRUARY.--High winds whistled among the trees this morning, and dark clouds of stratus appeared in the sky. A substantial shower fell about 9 A.M., and the horizon was gradually shut in by clouds of nimbus. The high wind had blown steadily from north both yesterday and this morning, and in the same quarter a thunder cloud seemed busy. But when the rain began to fall, the wind shifted to the S.W., from which quarter the rain seemed to come. With it came a very peculiar smell, which I had noticed near Mount Arapiles in 1836, about the time of the commencement of the rainy weather there; and nothing could have been more welcome to us now, than the prospect of rain, and the decided change in the temperature from 115 deg. to 73 deg.. This was almost the first day during a month in which the air had not been warmer than our blood; often had it been greater than fever heat, so that 73 deg. felt to us as cool as 50 deg. would have been to a resident of Sydney. Much rain did not fall at our camp, but it seemed that rain was falling about the sources of the Bogan and other places at which a supply of water was indispensable to enable us to proceed. At sunset, glimpses of a clear sky appeared about the horizon, and during the night the moon and stars came forth, and destroyed all hopes of more rain. We were thankful, however, for the relief afforded by what had fallen, which had lowered the temperature about 40 degrees, and enabled us to enjoy a night of refreshing rest. Thermometer at sunrise, 85 deg.; at noon, 80 deg.; at 4 P.M., 73 deg.; at 9, 68 deg.;--with wet bulb, 67 deg.. 4TH FEBRUARY.--The morning dawned in a most serene sky, with refreshing breezes from the south, and the thermometer at 61 deg.. This day we had completed the repair of the wheels of half the drays. Many of the tire- rings had been cut, rewelded, and again fixed and bolted on the wheels; the wood of these having contracted so much in the intense heat, as to have rendered these repairs indispensable. The same repairs were required by the wheels of the remaining drays and those of the light carts, and the smith and wheelwright continued their work with activity and zeal. Meanwhile the cattle were daily regaining strength and vigour for another effort. Thermometer at sunrise, 61 deg.; at noon, 89 deg.; at 4 P.M., 89 deg.; at 9, 72 deg.;--with wet bulb, 62 deg..