Note 9 — INDUSTRIAL AND PECUNIARY EMPLOYMENTS[1]
Reading edition
Since the ground of payment of wages is the vendibility of the product, and since the ground of a difference in wages is the different vendibility of the product acquired through the purchase of the labor for which the wages are paid, it follows that wherever the difference in vendibility rests on a difference in the magnitude of the product alone, there wages should be somewhat in proportion to the magnitude of the product.