214 



PEARL— STAPLE COMMODITIES AND 



The data of Table XIII. are exhibited graphically in Fig. lo. 

 In this diagram the total length of the bars from the line shows 

 the total percentage increase or decrease in consumption in 1917-18 

 as compared with the preceding six years. The cross-hatched por- 

 tion of each bar shows the percentage increase in population, and 

 therefore the part of the increased consumption to be expected as 



ptRctnZ'^tGe incPt^st or DfARtASt /// cohsumptjon 



Bl-YJfiD PAPlTY IV.'Tfi POPULAT'On /nCPtASE- 



PORT/on Of /rrcptASfv ccnsuriFT/on 

 dusTiHto Br popuu)riori /rtcfftASf- 



Fig. 10. Showing the percentage increase or decrease in consumption in 

 1917-18 as compared with the annual average of the six years preceding. For 

 explanation see text. 



a result of population increase. Where the black bar is below the 

 top of the cross-hatched population bar it means a conservation. 

 Thus the true conservation on wheat amounted to 10.80 -|- 5.73 

 = 16.53 per cent, of the normal average consumption. 



