Part 55

To him and to Lieutenant John M. Brooke, afterwards Com. Brooke, C. S. N., belongs the credit of deep-sea soundings; and to him we owe the suggestion of the submarine telegraphic cable across the Atlantic. (See below, letter to Secretary of the Navy.) Cyrus W. Field said, at a dinner given in 1858 to celebrate the first cable message across the Atlantic,--"Maury furnished the brains, England gave the money, and I did the work."

His "Physical Geography of the Sea" has been translated into all the languages of Europe, and caused Humboldt to say that Maury had founded a new science. His researches and scientific labors gained him honors and medals from all scientific societies. His "Navigation" and "Geographies" are in popular use in our schools. His style is irresistibly attractive, being clear, strong, elegant, and indicative of truth in the man behind it.

He entered the Confederate service in 1861, and was employed at first at Richmond and later as naval agent in Europe. When Lee surrendered, he was in the West Indies on his way to put in use against Federal vessels in Southern ports a method of arranging torpedo mines which he had invented.

He then went to Mexico (1865) and took a position in the Cabinet of the Emperor Maximilian; but the revolution there (1866) terminated his relations with that government. After two years in England, he returned to Virginia and in 1868 became professor of Physics in the Virginia Military Institute. At this time the University of Cambridge conferred upon him the degree of LL. D., and the Emperor of the French invited him to Paris as superintendent of the Imperial Observatory.

His life has been written in a most engaging style by his daughter, Mrs. Diana Fontaine Maury Corbin.

WORKS.

Navigation. Scraps from the Lucky Bay, by Harry Bluff. Rebuilding Southern Commerce. Wind and Current Charts. Sailing Directions. Physical Geography of the Sea. Series of Geographies. Physical Survey of Virginia. Resources of West Virginia (with Wm. M. Fontaine). Lanes for Steamers Crossing the Atlantic. Amazon and Atlantic Slopes. Magnetism and the Circulation of the Atmosphere.

THE GULF STREAM.

(From Sailing Directions.)

It is not necessary to associate with oceanic currents the idea that they must of necessity, as on land, run from a higher to a lower level. So far from this being the case, some currents of the sea actually run up-hill, while others run on a level. The Gulf Stream is of the first class. In a paper read before the National Institute in 1844, I showed why the bottom of the Gulf Stream ought, theoretically, to be an inclined plane, running upwards. If the Gulf Stream be 200 fathoms deep in the Florida Pass, and but 100 fathoms off Hatteras, it is evident that the bottom would be lifted 100 fathoms within that distance; and therefore, while the bottom of the Gulf Stream runs up-hill, the top preserves the water-level, or nearly so; for its banks are of sea-water, and being in the ocean, are themselves on a water-level. . .

. . . . . . .

I have also, on a former occasion, pointed out the fact, that, inasmuch as the Gulf Stream is a bed of warm water, lying between banks of cold water--that as warm water is lighter than cold--therefore, the surface of the Gulf Stream ought, theoretically, to be in the shape of a double inclined plane, like the roof a house, down which we may expect to find a shallow surface or roof current, running from the middle towards either edge of the stream.

The fact that this roof-current does exist has been fully established . . . . . . by officers of the navy. Thus, in lowering a boat to try a current, they found that the boat would invariably be drifted towards one side or other of the stream, while the vessel herself was drifted along in the direction of it. . .

This feature of the Gulf Stream throws a gleam of light upon the locus of the Gulf weed, by proving that its place of growth cannot be on this side (west) of that stream. No Gulf weed is ever found west of the axis of the Gulf Stream; and, if we admit the top of the stream to be higher in the middle than at the edges, it would be difficult to imagine how the Gulf weed should cross it, or get from one side of it to the other.

The inference, therefore, would be, that as all the Gulf weed which is seen about this stream is on its eastern declivity, the locus of the weed must be somewhere within or near the borders of the stream, and to the east of the middle. And this idea is strengthened by the report of Captain Scott, a most intelligent ship-master, who informs me that he has seen the Gulf weed growing on the Bahama Banks.

DEEP-SEA SOUNDINGS.

(From a Letter to the Secretary of the Navy, 1854, given in Mrs. Corbin's Life of Maury.)

The U. S. brig "Dolphin," lieutenant commanding O. H. Berryman, was employed last summer upon special services connected with this office. . . . He was directed also to carry along a line of deep-sea soundings from the shores of Newfoundland to those of Ireland. The result is highly interesting upon the question of a submarine telegraph across the Atlantic, and I therefore beg leave to make it the subject of a special report.

This line of deep-sea sounding seems to be DECISIVE of the question as to the practicability of a submarine telegraph between the two continents in so far as the bottom of the deep sea is concerned. From Newfoundland to Ireland the distance between the nearest points is about 1600 miles, and the bottom of the sea between the two places is a plateau which seems to have been placed there especially for the purpose of holding the wires of the submarine telegraph, and of keeping them out of harm's way. It is neither too deep nor too shallow; yet it is so deep that the wires but once landed will remain forever beyond the reach of the anchors of vessels, icebergs, and drifts of any kind, and so shallow, that they may be readily lodged upon the bottom. . . . . . .

A wire laid across from either of the above-named places on this side to the north of the Grand Banks, will rest on that beautiful plateau to which I have alluded, and where the waters of the sea appear to be as quiet and as completely at rest as it is at the bottom of a mill-pond. It is proper that the reasons should be stated for the inference that there are no perceptible currents and no abrading agents at work at the bottom of the sea upon this telegraphic plateau. I derive this inference from the study of a physical fact, which I little deemed, when I sought it, had any such bearings.

Lieutenant Berryman brought up, with "Brooke's deep-sea sounding apparatus," specimens of the bottom from this plateau. I sent them to Professor Bailey, at West Point, for examination under his microscope. This he kindly undertook, and that eminent microscopist was quite as much surprised to find, as I was to learn, that all these specimens of deep-sea soundings are filled with microscopic shells. To use his own words, "not a particle of sand or gravel exists in them." These little shells therefore suggest the fact that there are no currents at the bottom of the sea whence they come; that Brooke's lead found them where they were deposited in their burial-place. . . .

Had there been currents at the bottom, they would have swept and abraded and mingled up with these microscopic remains the débris of the bottom of the sea, such as ooze, sand, gravel, and other matter; but not a particle of sand or gravel was found among them. Hence the inference that these depths of the sea are not disturbed by either waves or currents. Consequently, a telegraphic wire once laid there would remain as completely beyond the reach of accident as it would be if buried in air-tight cases.

HEROIC DEATH OF LIEUTENANT HERNDON.

(From Maury's Report, in Mrs. Corbin's Life of Maury.)

U. S. NATIONAL OBSERVATORY, WASHINGTON, D. C., October 19th, 1857.

SIR,--On the 12th day of September last, at sea, the U. S. mail steamship "Central America," with the California mails, many of the passengers and crew, and a large amount of treasure on board, foundered in a gale [off Cape Hatteras]. The law requires the vessels of this line to be commanded by officers of the Navy, and Commander William Lewis Herndon had this one. He went down with his ship, leaving a glowing example of devotion to duty, Christian conduct, and true heroism. . . . .

The "Central America," at the time of her loss, was bound from Aspinwall, viâ Havana, to New York. She had on board, as nearly as has been ascertained, about two millions in gold, and 474 passengers, besides a crew, all told, of 101 souls--total, 575.

She touched at Havana on the 7th September last, and put to sea again at nine o'clock on the morning of the 8th. The ship was apparently in good order, the time seemed propitious, and all hands were in fine health and spirits, for the prospects of a safe and speedy passage home were very cheering. The breeze was from the trade winds quarter at N. E.; but at midnight on the 9th it freshened to a gale, which continued to increase till the forenoon of Friday, September 11th, when it blew with great violence. . .