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book iii.chapter xxvi.§ 3.

the same ratio to his returns as before, and the rate of profit would be unaltered. The reader who may wish for a more minute examination of this point, will find it in the volume of separate Essays to which reference has before been made.[1] The question is too intricate in comparison with its importance, to be further entered into in a work like the present; and I will merely say, that it seems to result from the considerations adduced in the Essay, that there is nothing in the case in question to affect the integrity of the theory which affirms an exact correspondence, in an inverse direction, between the rate of profit and the Cost of Labour.

  1. Essay IV. on Profits and Interest.