CEREALS 43 



from individual workers in all the States, both as regards 

 their own work and that of others. Of those not 

 specifically referred to in the text, I would like to thank 

 the officers of the New South Wales Department for 

 much information, both given verbally and taken from 

 their writings; to Mr. M. Kahlbaum, manager of the 

 Adelaide Milling Co., one of our highest authorities in 

 Australia on scientific wheat milling; to Mr. H. W. 

 Potts, Principal of the Hawkesbury Agricultural College ; 

 and to Mr. J. B. Trivett, Government Statistician for 

 New South Wales, for figures in connection with acre 

 yields. 



APPENDIX. 



Possible Extension of Wheat Production in Australia. 

 On the assumption that a rainfall of 10 in. during the 

 growing season (April to October inclusive) may be 

 regarded as the present limit of profitable wheat pro- 

 duction, we have in the four principal wheat-producing 

 States the following areas above that limit : 



New South Wales ... ... 163,772 square miles 



Victoria ... ... ... 74,6i6 ,, 



South Australia ... ... ... 46,980 ,, 



Western Australia ... ... 93>5oo ,, 



The whole of this area is, of course, not suitable for 

 wheat growing. In New South Wales, for example, it 

 is calculated that out of the 105,000,000 acres receiving 

 over 10 in. during the growing season, only about one 

 quarter, or about 26,000,000 acres, can be profitably 

 cultivated for wheat. 



At the present time, and for the past ten years, the 

 area harvested for grain has represented about 80 per 

 cent, of the total area under wheat, the remainder being 

 cut for hay and green feed. We must assume that this 

 proportion will continue, so that of this 26,000,000 acres 

 it may be assumed that a little under 21,000,000 acres will 

 be the maximum area harvested for grain. At present 

 only about 3,000,000 acres (3,140,000) are under culti- 

 vation for w r heat. It is therefore possible even under 

 existing conditions to increase the area of wheat pro- 

 duction by over 17,750,000 acres in New South Wales. 

 If the average yield per acre of the past ten years 

 (i2'i bushels) is maintained, this would mean a total 



