This e-text is based on the 1903 edition of the original book. Minor punctuation errors have been tacitly corrected. Inconsistencies in hyphenation, ligatures, and accented forms, such as 'sun-flower/sunflower', 'formulæ/formulae', 'Combinatoriâ/Combinatoria', etc., have been retained. Missing footnote numbers have been added according to sequence. The Table of Contents has been changed regarding the content of the first section 'Biographies, Works, and Essays.'…
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