240 



3. Region W.3. Arid Centre. (Like Nullagine). 



Has greater aridity than W.2. The boundaries are arbitrary. The northern 

 boundary is along the Tropic of Capricorn. The west is bounded by W.2 at E. The 

 southern boundary is approximately the 10 inch isohyet (Bullfinch to Balladonia), 

 while the sea-coast and the South Australian frontier (129° E) complete the boundaries. 



4. Region W.4. Swanland. Perth. 



A temperate region with a rainfall of over 10 inches (it roughly follows the 

 10 inch isohyet on the east). It is bounded by the ocean on the west and south, in- 

 cludes the south-west of local parlance, and is a triangular area. The Leeuwin is the 

 most notable angle of the triangle. 



"The south-west of the State is different in character from any other portion 

 of Australia. Its rains fall chiefly in winter, and reach 40 inches per annum near Cape 

 Leeuwin, which differentiates it from the rest of the State ; while its geology and flora 

 are notably different from that of the winter rain regions in Eastern Australia." 



5. Region K.l. Darwinia. Darwin. 



Includes the northern part of the Northern Territory, and is roughly bounded 

 on the south by the 15 inch isohyet, and on the east by the Gulf of Carpentaria. 



6. Region K.2. Macdonnells. (Like Daly Waters). 



Includes the southern part of the Northern Territory ; the western boundary 

 is Western Australia, while the eastern is Queensland. It has three main ranges, running 

 east and west, viz., in the north (lat. 21 deg.), the Davenport Ranges (2,000 feet) ; 

 on the Tropic, a series of parallel ranges called the Macdonnells, culminating in Mount 

 Heughlin (4,800 feet) ; the Musgrave Ranges in the south, culminating in Mount Wood- 

 ruffe (4,000 feet). 



7. Region S.l. Lake Eyre. (Like Broken Hill). 



It is the northern arid region of South Australia. It may be separated from S.2 

 by a line joining the head of the Bight to the south of Lake Frome. This line agrees 

 fairly with the 10 inch isohyet, and separates the Western Tableland and Lake Eyre 

 basin from the coastal portions of the State. "In this division is one of the chief areas 

 of internal drainage in the world." 



8. Region S.2. Adelaide. (Like Broken Hill). 

 This forms the southern moiety of the State of South Australia ; it is the southern 

 agricultural region, and roughly corresponds to what has long been termed the "counties," 

 i.e., those portions of the State where definite land areas have been deliminated and 

 named. 



