(P. = page, l. = line, F: = for, R: = read.)

P. 4l. 13, F: employed R: employed in most instances;
P 4l. 35, F: posses R: cite; p. 10l. 19, F: sides R: legs;
p.11l. 1, F: of 3000 R: of perhaps 3000; R. .19 l. 3, F: solids
R: regular solids; p.23ll. 28, 36, F: paradoxies R: paradoxes;
R 32 l. 13, ; p. 36l. 37, F: Appolonius R: Apol-
lonius; p. 39l. 21, F: sides R: elements; R. 49 l. 3, F: of a
R: of the area bounded by a:, p. 52l. 39, F: zeta R: van;
p. 53l. 4, F: final sigma R: vau; p. 56l. 14, F: called R: called
by the later Greeks and Euclid; p. 57l. 42, F: Mittelalter
und Alterthum R: Alterthum und Mittelalter; p. 58l. 6, F:
are R: and for perfect numbers are; p. 60l. 21, F: age was
R: age at the time of his death was; p. 80, l. 34, F: in R:
known in; p. 80l. 38, F: n'R: n!;p. 93l. 29, F: has R:
(having real roots) has; p. 99l. 20, F: EuphratesR: Tigris;
p. 105l. 22, F: √ 1 + D²R: √ (1 + D²); p. 105l. 27, F: or
R: of; p. 106l. 25, F: discovered R: observed: p. 114l. 13,
F: IrelandR: York; p. 116l. 14., F: Finé R: Fine; p. 116l. 37,
dele : a; p. 122l. 31, F: nor R: not; p. 123l. 36, F: Tivolis'
R : Tivoli's; p. 127l. 2, F : profundis R: profundus; p. 133l. 39,
F: x³= mx- nR: x³+ mx= n;p. 133l. 41, :
p. 136l. 13, F: equations R: general equations;
p. 137l. 46, F: Trigonometry R: Trigonometrie; p. 139ll. 13,
14, in the quotation, F: a, b R: A, B, respectively; p. 142l. 46,
F: Coïmpre R: Coimbre; p. 156l. 7, F: Wallis in 1695 ob-
tained ½ log(1 + z)/log(1 - z) R: James Gregoryin 1668 and
Edmund Halleyin 1695 obtained substantially the series
½ log(1 + z) - ½ log(1 - z); p. 156l. 20, F: Pierre Varignon. .
1722 R: Jakob Bernoulliin a paper published in the Acta eru-
ditorumin 1691; p. 157l. 2, F: equations R: equations (having

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