TABLE A: FREQUENCIES OF STRUCTURAL MARKS

George Summey, Jr., American Punctuation, 1949, The Ronald Press Co.

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In making up Table A [...] I have omitted the following: (1) hyphens, apostrophes, en dashes (as in the expression 1917–18), commas in numerals (as in 100,999), and abbreviation periods, except where terminal duty is performed by the same period; (2) quote marks; (3) points within extracts, except points that mark the termination or interruption of the extract. Editorial brackets and ellipsis dots belong to extracts, and therefore are not counted.