This thesis is concerned with the characteristics of slaveholding and indentured servitude in seventeenth century Maryland, so far as these can be delineated from quantitative data. on the basis of a quantitative analysis of personal estates in the Inventories and Accounts of the Probate Court, several conclusions are apparent . These can best be stated in summary form in six propositions . First, estates with bond labor (slaves and/or servants) decreased from 36 per cent of the total number of estates during the period 1674 to 1679 to 24 per cent in 1695 to 1699. Second, the percentage of estates with slaves (slaves only or slaves and servants) increased from 24 per cent of those estates with bond labor in the period 1674 to 1679 to 72 per cent in 1695 to 1699. Third, the average number of slaves per estate (of those estates holding slaves) increased from 2.89 in the period 1674 to 1679 to 5.50 in 1695 to 1699. The average number of servants per estate (of those holding servants) decreased from 2.88 in the period 1674 to 1679 to 2.15 in 1695 to 1699. Fourth, those who invested 0 to 20 per cent of their total income in bond labor decreased, while those who invested 21 to 40 per cent of their total income in bond labor remained fairly constant. Those who invested 41 to 70 per cent of their total income in slaves and/or servants increased during the twenty-six year period. Fifth, there appeared to be a concentration of slaves in the hands of the wealthy. over the twenty-six year period, 17.6 per cent of the estates with bond labor held 52.2 per cent of the total number of slaves. Sixth, the average value of male slaves during the period was between L21 and L25; the average value of a female slave was Ll6 to L20 for the first several decades and L21 to L25 for the last decade. The average value for servants ranged from Ll to LlO, with the value increasing as the time of service increased.