According to the admission of the farmers themselves--and they are notoriously not in the habit of exaggerating their profits--it yields thirteen-fold on the seed sown.

Thirteen measures of corn are worth thirteen times ten scudi, or 130 scudi.
Deduct 80, the cost of cultivation, and 50 remain.

Multiply by 100, the result is 5,000 scudi (about L1,070), which will be the net income arising from the 100 rubbia cultivated in corn.

The same extent of land under pasturage will produce L160 or L180.
Consider, moreover, that it is not the net, but the gross income, which constitutes the wealth of a country.

The cultivation of 100 rubbia, before it puts 5,000 scudi into the farmer's pockets, has put some 8,000 scudi in circulation.