Immigration, confused with emigration, [192], Glossary.

Imperative mode, [91], [98].

Improving one's vocabulary, rules for, [203-204].

Improprieties, [190].

Indentation, of paragraph, [149]; of paragraph, in letters, [157], [161], [164].

Infinitives, explanation of, [83-84]; forms of [83], [91], [99]; cases used with, [21-22]; rules for sequence of infinitive tenses, [84]; split, [85].

Inflection, defined, [7].

In, confused with into, Glossary.

Inside address of letters, [157-159].

Interjection, [2].