employments of labour and stock, by restraining the competition in some employments to a smaller number than might otherwise be disposed to enter into them.

The exclusive privileges of corporations are the principal means it makes use of for this purpose.

The exclusive privilege of an incorporated trade necessarily restrains the competition, in the town where it is established, to those who are free of the trade. To have served an apprenticeship in the town, under a master properly qualified, is commonly the necessary requisite for obtaining this freedom. The bye laws of the corporation regulate sometimes the number of apprentices which any master is allowed to have, and almost always the number of years which each apprentice is obliged to serve.