2. The Gulf Stream can be traced along the shores of the United States by the blueness of the water. 3. The North Pole has been approached in three principal directions. 4. In 1607, Hudson penetrated within six hundred miles of the North Pole. [Footnote: "1607" may be treated as a noun, and "six hundred" as one adjective.] 5. The breezy morning died into silent noon. 6. The Delta of the Mississippi was once at St. Louis. 7. Coal of all kinds has originated from the decay of plants. 8. Genius can breathe freely only in the atmosphere of freedom.

\in \
\ _____\below
\atmosphere \just \
\___________ \Falls
\ \______
\only \
\the

+Explanation+.——Only modifies the whole phrase, and just modifies the preposition.

9. The Suspension Bridge is stretched across the Niagara river just below the Falls. 10. In Mother Goose the cow jumps clear over the moon. 11. The first standing army was formed in the middle of the fifteenth century. 12. The first astronomical observatory in Europe was erected at Seville by the Saracens. 13. The tails of some comets stretch to the distance of 100,000,000 miles. 14. The body of the great Napoleon was carried back from St. Helena to France.

* * * * *

LESSON 18.
COMPOSITION-PREPOSITIONAL PHRASES.

+COMMA-RULE.—Phrases that are placed out of their usual order [Footnote: For the usual order of words and phrases, see Lesson 51.] and made emphatic, or that are loosely connected with the rest of the sentence, should be set off by the comma.+ [Footnote: An expression in the body of a sentence is set off by two commas; at the beginning or at the end, by one comma.]

+Remark.+—This rule must be applied with caution. Unless it is desired to make the phrase emphatic, or to break the continuity of the thought, the growing usage among writers is not to set it off.

+Direction.+—Tell why the comma is, or is not, used in these sentences:—