What, then, are the onerous elements that enter into the value of land-parcels and constitute their Cost of Production? There are only two such elements, namely, _Cost of Labor and Cost of Capital_. To find out exactly what "Labor" is, and what there is in it entitling and assuring its reward in "Wages," will be the task and perhaps also the pleasure of the next chapter; but it will suffice for the present discussion to say, that Labor is human exertion put forth for the sake of a commercial return. Lands can by no possibility be brought out of a state of nature into a state of value without the expenditure of Labor; and the actual or estimated cost of this labor, accordingly, is the first constituent of the Cost of Production of valuable lands considered as Commodities. Labor, however, can not apply itself to free lands in order to make them valuable without the co-operation of another onerous element, namely, Capital, in some of its many forms. For example, if forest lands are to be made tillable, the trees must first be cut down, and this will require besides the muscular exertion of the laborer something in the way of an axe, which is capital, the result of previous labor reserved to assist in further production: if native prairie is to be subdued to a valuable commodity, something of the nature of a plough must be employed in the process, and horses or a steam engine to propel it, and a plough and horses are capital, and still require fresh labor to make them useful in production. But capital always costs something; and, therefore, the cost of the Capital enters in as a second constituent into the cost of production of Land-Commodities. But these two costs are all. We shall search in vain for any other onerous element in the cost of producing commodities. There are two variables only in the Cost of Production, which itself is the sum of the two subordinate costs. (a) And now let us analyze first the Cost of Labor in this connection, and then second the Cost of Capital, and we shall soon reach radical and unchangeable ground, and find in the sum of these two an aggregate Cost of Production, and also all of the variables that can ever enter into such Cost. It is plain to reason, that only by Labor non-valuable land-pieces ever did or ever can become valuable. Captain John Smith understood this in 1607 at Jamestown as well as anybody understands it now: there were 48 gentlemen, and only 12 tillers of the soil, among the 105 colonists, who originally landed there: "_nothing is to be expected hence_," he wrote of the new country, _but by_ "_labor_:" new supplies of laborers, aided by a wise allotment of land-parcels to each colonist, secured after five years of struggle the lasting fortunes of Virginia: "_men fell to building houses and planting corn_": the very streets of Jamestown were sown with tobacco; and in fifteen years the colony numbered 5000 souls.