Page 147, Ranke. History of England, vol. ... endon Press: part of the text is missing from the source document; the publisher is the Clarendon Press, probably the reference is to volume ii.
Page 182, 184: The available source document was not of sufficiently good quality to allow reading and transcribing all of the texts in the small illustrations in the photographic copies of the time charts.
Page 221 ff., 235: the ditto marks/low double quote marks in amounts are present as such in the source document; they appear to be used as separators between the pounds, shillings and pence. The inconsistent use of S. and D. above the shillings and pence has been copied from the source document.
Page 230, Nearly all children will write thus: 3⁄4 × 7 = 3⁄2 ÷ 3, etc.,: as printed in the source document, the first fraction should be 3⁄14.
Page 233, 561 = 3 × 3 × 3 × 23: the multiplication results in 621, which is the number required cf. the sum on the previous page. Calculation before “I have not given ...”: × 2 should be inserted after 11 × 5.
Page 234, circulator example: “∴ No =” moved to more clearly reflect the division.
Page 235, Suppose we want a sum ...: the calculation and accompanying explanation are given as printed; the decimal point in the last term (·059692) was not visible in the source document.
Page 260, footnote [25]: am × an = am × n should be am × an = am + n.
Changes:
Footnotes, tables, equations and illustrations have been moved outside text paragraphs.