I have placed at the end of this book a list of the works to which I am mainly indebted. Mr. Chisholm's Handbook of Commercial Geography must be mentioned here. To it I am under a deep sense of Obligation, as at every stage of my work it has been Of the greatest assistance to me. I have to express my thanks to the Oxford University Press for permission to reproduce their rainfall maps, which, I believe, will prove of value to students. Professor J. W. Gregory very kindly allowed me to make use of his map showing the geographical divisions of Australia.