WEIGHT EQUIVALENT 



per STANDARD 



UNIT 



OF 



LABOUR -TIME X- 



AVERAGE 



"EIGHT PRODUt. 



tons 



O.OO/4-OS 



GOLD 

 SILVER 



riN 



0.O32 

 2.00/ 



2.1? •> SZ f 0475 WHEA T 

 " 7S *"8: II Mf EASE. BARLEY 



Sc BEANS 



+0.8 



72.3 



>'2.4- o? 



252" 



POTATO £S 



TURNIPS 



MANCEL-WOfiZ* 



( X AN AVEIiAGE YEARS LABOUR OF ONE AfAAfJ 



COAL 



(Pit) 



