Friday, 6th July, The Bonney Creek. A sad, sad disappointment; all our most sanguine hopes are again gone, for, during the night, the clouds broke up and have all vanished; it is very vexing. I shall rest the horses till Monday, and then, ill and dispirited, commence my homeward journey. I dare not venture into a new route, for, want of water, and the low condition of my horses, compel me to keep my former track. Last night about 10 o'clock, I observed the comet for the first time, above the west horizon; it set at 7 o'clock 20 degrees north of west. At sundown it has become overcast with heavy clouds, and my hopes are again raised; I trust we may get it now. Midnight: still cloudy, and every appearance of rain. Wind changeable.