Pennsylvania, so that it was considered preferable to buy the second generation in the West Indies, after they had become acclimated.[36] Some were brought from other colonies on the mainland, particularly those to the south. At times Pennsylvania herself exported a few to other places.[37] The prices paid in the colony naturally fluctuated from time to time in accordance with supply and demand, and varied within certain limits according to the age and personal qualities of each negro. The usual price for an adult seems to have been somewhere near forty pounds.[38]

As to the number of negroes in Pennsylvania at different times during the colonial period almost any estimate is at best conjecture. Not only are there few official reports, but these reports, in the absence of any definite census, are of little value.[39] Apparently one of the best estimates was that made in 1721, which stated the number of blacks at anywhere between 2,500 and 5,000.[40] In 1751 it was at least widely believed that there were in Philadelphia 6,000, and it is asserted that the total number in Pennsylvania including the Lower Counties was 11,000.[41] It is probable that the same number was not much exceeded in Pennsylvania proper at any time before 1790. In these estimates no attempt was made to distinguish the free from the slaves. The number of slaves, it is true, was very near the total at both these periods, but after the middle of the century it began dwindling as the number of negro servants and free men increased. In 1780 a careful estimate placed the slaves at 6,000.[42] According to the Federal census of 1790 the number of negroes in Pennsylvania was 10,274.[43]

Of these negroes the great majority throughout the slavery period were located in the southeastern part of Pennsylvania, in and around Philadelphia. There were many in Bucks, Chester, Lancaster, Montgomery, and York counties. There were negroes near the site of Columbia by 1726. John Harris had slaves by the Susquehanna as early as 1733. In 1759 Hugh Mercer wrote from the vicinity of Pittsburg asking for two negro girls and a boy. The tax-lists and local accounts reveal their presence in many other places.[44] Doubtless a few might be traced wherever white people settled permanently. In general it may be said that they were owned in the English, Welsh, and Scotch-Irish communities. The Germans as a rule held no slaves.

Where negroes were owned they were for the most part evenly distributed, there being few large holdings. In rare instances a considerable number is recorded as belonging to one man, and the iron-masters generally had several. The tax-lists, however, indicate that the average holding was one or two, except in Philadelphia among the wealthier classes where it was double that number.[45]

The character of slavery in Pennsylvania was in many respects unique, but in no way was this so true as in connection with the number of negroes held. Generally speaking, the farther south a section lay the more slaves did it possess. Thus there were fewer in New England than in the middle colonies; there were fewer there than in the South. But to this rule Pennsylvania was an exception, for it had fewer negroes than New Jersey, and not half so many as New York.[46] This was due to two sets of causes: the first, ethical; the second, economic. The first of these are easily understood. They resulted from the character of many of the people who settled Pennsylvania, their dislike for slavery, and their refusal to hold slaves. The second are not so easily traceable, but were doubtless more powerful in their influence, for they were owing to the character of Pennsylvania’s industrial growth.

The plantation system, which is most favorable to the increase of slavery, never appeared in Pennsylvania. During the whole of the eighteenth century the activities of the colony developed along two lines not favorable to negro labor: small farming, and manufacturing and commerce.[47] The small farms were almost always held by people who were too poor to purchase slaves, at least for a long while, and the kind of farming was not such as to make slavery particularly profitable. In commerce no large number of negroes was ever employed, while manufacturing demanded a higher grade of labor than slaves could give. It is true that in some cases where there was an approach to the factory system, and where the work was rough and needed little skill, slaves could answer every purpose. For this reason at the old ironworks negroes were in demand.[48] As a rule, however, this was not the case. It was because of its industrial character that Pennsylvania was peculiarly the colony of indentured white servants.

Furthermore, ethical and economic influences interacted with subtle and powerful force. Barring all other considerations, the cost of a slave was a considerable item, not to be afforded by a struggling settler; hence slavery never attained magnitude on the frontier. Before 1700 Pennsylvania was all frontier; hence it had very few negroes. In the period from 1700 to about 1750 the country between the Delaware and the Susquehanna was filled up, and the early conditions largely disappeared. It was then that the greatest number of negroes was introduced. In the period between the middle of the century and the Revolution this older country became well developed and prosperous; farms became larger and better cultivated; there were numerous respectable manufacturers and wealthy merchants. These men could easily afford to have