1 v. (95 leaves).
Ciphering book ("Peter Praal [sic]: His Book of Arithmetick") pertaining to many types of mathematical calculation. Also included in the volume (in two different hands) are records of births for Prall's family (entries through 1743) and for his son John's family (entries through 1777).
Among the calculations are several currency conversions (possibly at hypothetical rates), including one from New York dollars (valued at 6 shillings each) to West Jersey dollars (worth 5 shillings and 6 pence each).
Also present amidst the calculations are a variety of sayings in verse (with religious, moralistic or patriotic overtones) which have been used to fill out empty spaces.
Resident of Staten Island, New York, who later moved to Amwell Township (i.e., present day Raritan Township?), Hunterdon County, New Jersey; served as clerk of Amwell Township from 1745 (or earlier) until his death. Although he spelled his name "Praal" in 1717, he later adopted the spelling "Prall," as did all other family members.
In a later, homemade binding of fabric incorporating a leather backstrip which may be contemporary with the volume. Present within the binding are multiple leaves from an unrelated manuscript of practice penmanship.
Peter Prall. Ciphering Book. MC 1076. Special Collections and University Archives, Rutgers University Libraries.