Зображення сторінки
PDF
ePub

4. Every wise observer knows,
Every watchful gazer sees,
Nothing grand or beautiful grows
Save by gradual, slow degrees.
Ye who toil with a purpose high,

And fondly the proud result await,
Murmur not, as the hours go by;

That the season is long, the harvest is late.

5. Remember that brotherhood strong and true,
Builders and artists, and bards sublime,
Who lived in the past, and worked like you,-
Worked and waited a wearisome time.

Dark and cheerless and long their night,

Yet they patiently toiled at the task begun: Till, lo! through the clouds broke that morning light

Which shines on the soul when success is won.

LANGUAGE STUDY.

I. Write the analysis of: venturous (venire); infinite (finis); imnortal (mors); purpose (ponere); success (vedere).

In this piece, what adverbs are formed from the adjectives steady; patient; slow; careful; fond?

[merged small][ocr errors][merged small]

III. In stanza 2, point out a word used hyperbolically. (See Definition 9.) In stanza 3, point out two metaphors.

[blocks in formation]

This selection is from "The Physical Geography of the Sea," by Mathew F. Maury (1806–1873), a native of Virginia, and a distinguished scientific observer.

(11) Erin (literally "The Green Isle"), the poetical name of Ireland. — (11) Albion, the most ancient and the poetic name of England.

1. There is a river in the ocean. Its banks and its bed are of cold water, while its current is of warm. The Gulf of Mexico is its fountain, and its mouth is the Arctic seas. It is the Gulf Stream.

2. In the whole world there is no other such majestic flow of waters as the Gulf Stream; for its current is more rapid than the Mississippi or the Amazon, and its volume more than a thousand times greater.

3. The currents of the ocean are the most important of its movements. They carry on a constant interchange between the waters of the poles and those of the equator, and thus diminish the extremes of heat and cold in every zone.

4. The ocean currents are. for the most part, the result of the very great evaporation that takes place in

the vast waters of the tropical regions. The immense quantity of water there carried off by evaporation disturbs the balance or poise of the seas, and to restore this balance there is a perpetual flow of water fron the polar regions.

5. Now, when these streams of cold water leave the polar regions they flow directly towards the equator. But, before traveling far southward, their course is turned aside by the daily rotation of the earth on its axis. Still, they arrive at the tropics before they have gained the same velocity of rotation as the waters of the Torrid Zone. On that account they are left behind, and flow in a direction contrary to the diurnal motion of the earth. And hence the whole surface of the ocean for thirty degrees on each side of the equator flows from east to west in a broad stream or current (the "Equatorial Current"), three thousand miles broad.

6. Such would be the steady and constant flow of the waters of the ocean, were it not for the land. But the land breaks in on this regular westerly movement of the waters, sending some to the north and others to the south, according to the "lay" of the land.

7. Thus it is in the case of the great equatorial current in the Atlantic. From off Cape St. Roque, in South America, its principal branch takes a northwesterly course. Rushing along the coast of Brazil, it passes through the Caribbean Sea. Thence, sweeping round the Gulf of Mexico, it flows between Florida and Cuba, and so into the Atlantic. It is on entering the Atlantic

that this current takes the name of the Gulf Stream, the most beautiful of all the oceanic currents.

8. In the Strait of Florida the Gulf Stream is thirtytwo miles wide, and over two thousand feet deep, and it flows at the rate of four miles an hour. Its waters are of the purest ultramarine blue as far as the coast of Carolina; and so completely are they separated from the sea through which they flow, that a ship may at times be seen half in the one and half in the other.

9. As the Gulf Stream proceeds on its course, it gradually increases in width. Flowing along the coast of the United States to Newfoundland, it there turns to the east, dividing into two branches. Of these two branches, one reaches the Azores, while the other sets towards the British Islands, and away to the coasts of Norway and the Arctic Ocean. To this latter branch a peculiar interest attaches, from the fact that it wonderfully modifies the climate of all Western Europe.

10. Every west wind that blows crosses the Gulf Stream, and carries with it a portion of this heat to temper the northern winds of Europe. It is, in fact, the influence of the Gulf Stream that makes Erin the "Emerald Isle," and that clothes the shores of Albion in evergreen robes; while, in the same latitude, the coast of North America is fast bound in fetters of ice.

11. As a rule, the hottest water of the Gulf Stream is at or near the surface; and as the deep-sea thermometer is sent down, it shows that these waters, though still much warmer than the water on either side at the same

depth, gradually become less and less warm until the bottom of the current is reached. There is everywhere a cushion of cold water between this current and the solid parts of the earth's crust.

12. This arrangement is very beautiful. For, as we have seen, it is one of the offices of the Gulf Stream to convey heat from the Gulf of Mexico, and diffuse it over Western Europe. Now, cold water parts with its heat very slowly, or, as we say, it is a good nonconductor of heat; but if the warm water of the Gulf Stream were sent across the Atlantic in contact with the solid crust of the earth, all its warmth would be lost in the first part of the way, and the mild climates of France and England would be like that of wintry, icebound Labrador.

HEADS FOR COMPOSITION.

I. THE RIVER IN THE OCEAN: its banks and bed- its current - its fountain - its mouth name of this river.

II. OCEAN CURRENTS: their office- how they diminish extremes of temperature — explanation of their cause-great evaporation — flow of water from the polar regions the turning aside of their course.

cause of

III. ORIGIN OF THE GULF STREAM: nature of the equatorial current-how the land interrupts its regular flow-how in the Atlantic its main branch reaches the Gulf of Mexico.

IV. DESCRIPTION: extent of the Gulf Stream in the Strait of Florida - flow of its waters-their color-temperature— northward course - where it divides into two branches.

V. ITS, TWO BRANCHES: its southern branch-its northern branch - effect on the climate of northwestern Europe

« НазадПродовжити »