+DEFINITION.—A Preposition is a word that introduces a phrase modifier, and shows the relation, in sense, of its principal word to the word modified.+

Analysis and Parsing.

1. The pitch of the musical note depends upon the rapidity of vibration.

TO THE TEACHER.—See suggestions in Lesson 12, concerning the use of diagrams.

pitch depends
==========|=================
\The \of \upon
\ \
\ note \ rapidity
\———— \——————
\the \musical \the \of
\
\vibration
\————-

+Explanation+.—The diagram of the phrase is made up of a slanting line standing for the introductory word, and a horizontal line representing the principal word. Under the latter are drawn the lines which represent the modifiers of the principal word.

+Oral Analysis+.—-The and the adjective phrase of the musical note are modifiers of the subject; the adverb phrase upon the rapidity of vibration is a modifier of the predicate. Of introduces the first phrase, and note is the principal word; the and musical are modifiers of note; upon introduces the second phrase, and rapidity is the principal word; the and the adjective phrase of vibration are modifiers of rapidity; of introduces this phrase, and vibration is the principal word.

TO THE TEACHER.—See suggestions in Lesson 12, concerning oral analysis.

+Parsing+.—Of is a preposition showing the relation, in sense, of note to pitch; etc., etc.

TO THE TEACHER.—Insist that, in parsing, the pupils shall give specific reasons instead of general definitions.