The substitutes were also assigned their positions and practice began.
Where the same agents have not been multiplied, substitutes have been found that are just as effective in meeting the economic need.
Substitutes for Knives.--Steel is no doubt vastly better than iron, but it is not essential for the ordinary purposes of life; indeed, most ancient civilized nations had nothing better than iron.
Had he drawn still more upon fancy, the lovers of fiction would not have so much cause for their objections to his work. Still, the picture would not have been in the least true without some substitutes for most of the other personages.
Most, if not all, belong to the class that is increasable, although it may be with much difficulty. Even when the exact thing cannot be duplicated, as a bust by an ancient sculptor or an autograph of a dead author, many substitutes serving the same or closely related wants, affect and limit the demand, and thus increase the supply.