Punctuation / A Primer of Information about the Marks of Punctuation and their Use Both Grammatically and Typographically

by Frederick W. Hamilton

In numerical statements the comma separates Arabic figures by triplets in classes of hundreds: $5,276,492.72.

In tabular work reversed commas are used as a sign for ditto.

SCHOOLS TEACHING PRINTING
Boston:	Boston Typothetæ School of Printing.
“	Industrial Arts High School.
Chicago:	Lakeside Press School of Printing.
“	Chicago Typothetæ School of Printing.
“	Lane Technical High School.

The comma is placed between the words which it is intended to separate. When used in connection with quotation marks, it is always placed inside them.

“Honesty is the best policy,” as the proverb says.

Rules for the Use of the Comma

1. After each adjective or adverb in a series of two or more when not connected by conjunctions.

He was a tall, thin, dark man.

The rule holds when the last member of the series is preceded by a conjunction.

He was tall, thin, and dark.