AUSTRALIAN QUATERNARY CLIMATES AND MIGRATION 29 



He illustrates this by maps (Taylor, 1919, 1927). 



In the several maps given here, the line of advance and retreat 

 of the climatic belts is taken to be the axis of the overlap of the 

 tropical low pressure rainfall and the southern low pressure rain- 

 fall; this is referred to here as the "line of maximum aridity." 

 (Fig.l). 



F 



lijiM Rainfall-reliability Belt 



Fig. 1. 

 Present Line of Maximum Aridity and the Range of the Rainfall-reliability Belt. 



This paper discusses : 



I. The march of the climatic belts. 



II. Rainfall: fertility and aridity. 



III. Deposits containing artefacts. 



a. Tartanga and Devon Downs. 



b. Dunes at Altona and Point Cook. 



c. Deposits under lava-flows and volcanic ejecta- 

 menta. 



IV. Bones shaped by man or animals. 



V. Palaeogeography of the Postglacial and last glacial 

 periods. 



VI. Probable landing places. 



