SECTION IV.—THE PERIOD.
The Period, or Full Stop, is used to mark an entire and independent sentence, whether simple or compound.
RULE I.—DISTINCT SENTENCES.
When a sentence, whether long or short, is complete in respect to sense, and independent in respect to construction, it should be marked with the period: as, "Every deviation from truth is criminal. Abhor a falsehood. Let your words be ingenuous. Sincerity possesses the most powerful charm."—"The force of a true individual is felt through every clause and part of a right book; the commas and dashes are alive with it."—R. W. Emerson.
"By frequent trying, TROY was won.
All things, by trying, may be done."—Lloyd, p. 184.
RULE II.—ALLIED SENTENCES.
The period is often employed between two sentences which have a general connexion, expressed by a personal pronoun, a conjunction, or a conjunctive adverb: as, "The selfish man languishes in his narrow circle of pleasures. They are confined to what affects his own interests. He is obliged to repeat the same gratifications, till they become insipid. But the man of virtuous sensibility moves in a wider sphere of felicity."—Blair.
"And whether we shall meet again, I know not. Therefore our everlasting farewell take."—Shak., J. C.
RULE III.—ABBREVIATIONS.
The period is generally used after abbreviations, and very often to the exclusion of other points; but, as in this case it is not a constant sign of pause, other points may properly follow it, if the words written in full would demand them: as, A. D. for Anno Domini;—Pro tem. for pro tempore;—Ult. for ultimo;—i.e. for id est, that is;—Add., Spect, No. 285; i.e., Addison, in the Spectator, Number 285th.
"Consult the statute; 'quart.' I think, it is,
'Edwardi sext.,' or 'prim. et quint. Eliz.'"—Pope, p. 399.