The real and the ideal acre.
Therefore, when we are dealing with medieval documents, we have always to remember that besides ideal acres there were real acres which were mapped out on the surface of the earth, and that a plot will be, and rightly may be, called an acre though its size is not that of any ideal acre. To tell a man that one of these acre-strips was not an acre because it was too small would at one time have been like telling him that his foot was no foot because it fell short of twelve inches. This point is made very plain by some of the beautiful estate maps edited by Mr Mowat[1292]. We have a map of ‘the village of Whitehill in the parishe of Tackley in the countye Oxon., the moitye or one halfe whereof belongeth to the presidente and schollers of Corpus christi colledge in the universitye of Oxon., the other moitye unto Edwarde Standerd yeoman the particulars whereof soe far as knowne doe plainelye appeare in the platte and those which are unknowne, as wastes comons and lotte meadowes are equallye divided betweene them, drawne in November anno domini 1605, regni regis Iacobi iijo.’ We see four great fields divided first into shots and then into strips. Each strip on the map bears an inscription assigning it either to the college or to Mr Standerd, and with great regularity the strips are assigned to the college and to Standerd alternately. Then on each strip is set its ‘estimated’ content, and on each strip of the college land is also set its true content. Thus looking at one particular shot in the South Field we read:
ij. ac. coll. 1. 1. 36
Edw. Stand. ij. ac.
ij. ac. coll. 1. 2. 2
Edw. Stand. ij. ac.
ij. ac. coll. 1. 2. 2
Edw. Stand. ij. ac.
ij. ac. coll. 1. 0. 39.
This means that, going along this shot, we first come to a two-acre-strip of college land containing by admeasurement 1 A. 1 R. 36 P.; next to a two-acre strip of Standerd’s land, which the surveyor, who was making the map for the college, was not at pains to measure; then to a two-acre strip of college land containing 1 A. 2 R. 2 P.:—and so forth. Then in the margin of the map has been set ‘A note of the contentes of the landes in Whitehille belonginge to the colledge.’ It tells us how ‘theire groundes in the West Fielde by estimation 80 acres doe conteine by statute measure 48 A. 2 R. 24 P.’ The other fields we may deal with in a table