3. _Contract wages, paid by an employer, rest on the same cause of value, the direct or indirect effect of labor in the gratifying of wants._ When contract wages come to be spoken of, the personal element of bargaining between man and man comes in to obscure somewhat the impersonal causes that are operating. If the fisher and the miner bring their products to the general markets, the impersonal part of the problem is uppermost and the wages are recognized to be the market value of the material products. But if an employer hires a number of workmen, and the labor of each becomes merged and lost to view in a complex product, the uncritical mind stops, loses all hold on a guiding principle of value, and sees only the superficial fact of a personal bargain between employer and workman. Such a view overlooks the logical cause of value, and the network of impersonal forces which enwraps and binds the personal acts. [Sidenote: A single direct personal service] To begin with the simplest case: workers often are temporarily employed to produce for others means of gratification at once consumed. The barber shaves his patron, the ferryman takes the traveler across the river, the boy carries a message, the surgeon sets a broken bone. Each performs a useful service, but produces no long-abiding material result outside of the beneficiary, and no separable, salable material good. When each is paid according to the value of the gratification afforded, the first step is taken toward the regular contract-wage relation between man and man. [Sidenote: The continued wage contract for personal services] In ordinary domestic service the only condition not present in the cases just given is the more abiding character of the contract relation. The employer does not hire a coachman each time he wishes to take a ride, but having summed up the advantages of a coachman's services, he buys them by the month or the year. The price is determined in the market for coachmen of the needed ability, qualities ranging from stupid to bright, from weak to strong, and from drunk to sober. Instead of buying flowers from day to day, a wealthy man hires a gardener to cultivate them in a conservatory. The average market price of flowers influences the wages paid to the gardener, his wages being but the sum of the values (or of his contribution to the values) of flowers, well-kept lawn, and garden products. According to the conditions of each household and of the general market, the one or the other mode of buying these utilities is the more advantageous. [Sidenote: Labor employed on products exchanged]