QUEENSLAND RAIN FORESTS AND TREES. 211 



from 20 to 30 inches. The prevalence of brigalow in coastal 

 areas, as at Marmor, south of Rockhampton, with an average 

 rainfall of 34 inches at Eaglan (the nearest meteorological 

 station), and at Rosewood, with 32 inches, appears to signify 

 coastal localities with low rainfalls. 



Rain forests of a type less luxuriant than those of the 

 fertile areas of MaePherson Range and the North Coast line 

 occur in many parts of the State, especially in the coastal 

 iirea. Following are some of the locations of these less heavy 

 rain forests, with the annual rainfall of the locality in 

 parentheses: — Myer's Ferry, near Southport (55), Rose- 

 wood (32), Cioodna (37), Imbil (45), Theebine (40), 

 Marmor (Raglan, nearest station, 34). This type, which is 

 not so aptly described by the term ' ' rain forest, ' ' occurs in 

 areas of great or less extent from the Tweed Hiver in the 

 south to Rockhampton, and probably, from what the writer 

 has heard, as far as Cooktown in the north. 



THE RELATION OF RAIN FORESTS TO SOIL. ' 

 Both the luxuriant and the less heavy types of rain 

 forest abound on soils derived from various kinds of rock. 

 Following is an enumeration of some of the heavy rain-forest 

 areas, showing the kinds of rock from which the soils are 

 derived: — The MaePherson Range areas, such as Roberts' 

 Plateau, Tambourine Mountain (basalts and andesites)^; 

 Blackall Range (basalts) (H. I. Jensen) ; Kin Kin 

 (phyllites and slates)-; the area between Beenham Range 

 and Kin Kin (granodiorite)^; and the Eungella Range,, 

 westward of Netherdale, Mackay district (granodiorite).* 



SOME EFFECTS OF SOIL, RAINFALL, AND ' 

 CLIMATE ON RAIN FORESTS. 



The character of the luxuriant rain forests of areas 

 such as Tambourine Mountain, Kin Kin, and Eungella 

 Range shows that in those localities the conditions of soil 

 and rainfall approach the optimum. The heavy rain forests 

 of the MaePherson Range, such as those of Roberts ' Plateau, 



'H. C. Richards, Proc. Roy. Soc. Q., Vol. xx\'ii, plate x (1916). 



-L. C. Ball, Q'land Govt. Mining Journ., p. .58, Vol. xix., Feb, 

 1918. 



'L. C. Ball, loc. cit. 



*L. C. Ball, Q'land Geo. Survey Pubn. Xo, 224, p. 27 (1910). 



