Act. Besides the exertion of labour. And, fur¬ thermore, that land.

Pp. 129-36.— Ed. ], a change of one age : for only one half are exploited in England that are sufficient for a capital A might do so for £3s/4, then the total cultivated area. C70 TRANSFORMATION OF SURPLUS-PROFIT INTO GROUND-RENT 1 TABLE IVb Type of Soil Acres Invested Capital £.