Slavery promotes the division of labor only in the very beginning. The more dependent the slave is, the worse he works. Whatever he spoils or allows to go to waste injures only his master. Hence it is that slave-husbandry is only one degree removed from what the Germans call _Raubbau_, and which means, as nearly as we can translate it, the most thoughtless and wasteful management possible.(414) Whatever he consumes is simply so much gain to himself. Industry and skill are injurious to him, because, if remarkable for these qualities, his master exacts more work from him and is more adverse to setting him at liberty. Instead of the numberless incentives of the free workman: care for the future, for his family, honor and comfort, the slave is generally moved by one—the fear of ill-treatment, and to this he gradually becomes insensible.(415) The division of labor demanded by manufactures, and which is to be found for the most part only where each person is at liberty to choose his own avocation, is scarcely supposable where slavery, in the strict sense of the word, prevails. The same is true of the spirit of invention and improvement.(416) And even where the milder _glebæ __ adscriptio_ obtains, the division of labor is much hindered. Hence, competent judges all agree on the badness of slave labor;(417) which, as for instance in the United States, was used only where the slaves were crowded together in large numbers and could therefore be easily superintended. And not only are the slaves themselves indolent, but their masters as well; more particularly in slave countries where all labor is considered disgraceful. What must be the national husbandry of a people, one half of whom refuse to do anything that is right and proper, through malice, and the other half through pride! As soon as, on account of increased population and consequent increased consumption, this enormous waste of force can be endured no longer, free workmen become more profitable, not only to themselves and to the whole community, but to the greater number of the individuals who compose it.(418) On the Bernstoff estates the quantity of rye harvested before and after emancipation was as 3:8-⅓; of barley-corn as 4:9-⅓; of oat-grain as 2-⅔:8.(419)