[4] In order to show the relations more clearly, the foreign measures
most familiar to the Greeks are included in this Table.
[5] This is, of course, not the true number of English statute miles
contained in a degree of a great circle of the earth, but the number
_computed_ from the data exhibited in the Table, some of which are
only approximate; namely, 1 Degree = 75 Roman miles = 600 Greek
Stadia, and 1 Greek foot = 12·135 inches. The true value of a degree
in English miles is 69-1/51 = 69·0196, and the difference is only about
7-100ths of a mile.