The fog-signals on this coast are of the greatest importance, and, in order to aid in having the best system adopted, those personally interested are requested to pay attention to this notice.

The bell strikes every twenty seconds, and weighs about 1,500 lb.
By order of the Lighthouse Board,

SAND KEY LIGHTHOUSE.

W. B. FRANKLIN.

Philadelphia, April 20, 1853. This structure now being erected to replace the one destroyed by the hurricane of 1846, is situate in the centre of Sand Key, Gulf of Florida. It is founded on 17 iron piles, covering a square of 50 feet at the base, and tapering to 20 feet at the top. The keeper's house of one story, 38 feet square and 15 feet in height, is placed 20 feet above low water, and from thence there is a cylindrical tower 62 feet in height and 7 feet diameter, which leads to the lantern. The watch room and lantern are together 24 feet in height, thus making the structure in all 121 feet above low water.

The whole structure is painted of a dark colour, except the lantern, which is white.

The illuminating apparatus is of the Fresnel 1st order, and of the character called "fixed, varied by flashes." It shows for the space of one minute a clear steady light; in every alternate minute there is a brilliant flash of 10 seconds' duration, preceded and followed by partial eclipses of 25 seconds' duration.

The focal plane is 110 feet above low water. The tangant ray will strike the surface of the sea 12 nautical, or 13, statute miles, and the light will be distinctly visible at distances beyond this point, proportionate to the elevation of the observer above the surface of the water. From an elevation of 15 feet above the level of the sea, it should be seen at the distance of nearly 17 nautical miles. The latitude and longitude, as determined by the coast survey, areLatitude 24° 27' 09" 5 North.

Longitude 81° 52′ 43′′ .5 West of Greenwich.

The structure is now in course of erection, and near completion, and it is believed the light will be exhibited in all the coming month of June. Due notice will be given of the precise day so soon as it can be determined upon. By order of the Lighthouse Board,

GEO. G. MEADE,

Lieut. Top. Engineers, in charge of work.

PROGRESS OF TRADE.

Taking the imports into New York as a criterion of the whole, the value of the imports in the first five months of the present year, 1854, as stated in the "United States Economist," was 80,700,000 dollars, against 80,100,000 dollars in the previous year. The value of the exports from New York in the first five months of the year were in 1853, 27,700,000 dollars, and in 1854, 39,900,000 dollars. The trade of the United States, therefore, much as it increased in 1853, continues to increase in 1854. We know that to the date of the last month's returns our own trade continued to increase: we have reason to believe that the increase has continued and extended in the present month.Economist, July 1, 1854.

ANNUAL IMPORT AND EXPORT TRADE.

New York, Jan. 3, 1854.

Our importations of dry goods during the year 1853 have been unparalleled, and yet our market has not been overstocked at any time. Our imports have exceeded those of 1852 by 31,000,000. Upwards of 90,000,000 of dry goods have gone into the channels of consumption.

The following table shows the imports of dry goods to New York for three years

The cotton crop must be considerably shorter than last year. I cannot believe, however, that it will fall below the previous year more than 300,000 or 400,000 bales. The export trade of 1853, as compared with the preceding year, is furnished, but in this case the accounts are those of the fiscal year, which ends on the 30th of June :-

The receipts for customs during the month of May were 3,267,561 dollars 50 cents, against 2,900,505 dollars 24 cents same time last year. The United States Treasurer's official statement reports the specie in the United States depositories at 29,209,000 dollars. The balance in the Assistant Treasurer's office of this city, at the close of business yesterday, was 8,899,461 dollars 36 cents.-Economist, June 17, 1854.

SHIP-BUILDING.-LOSS AT SEA, &c.

According to the Annual Report on Commerce and Navigation of the United States for 1853, the tonnage of the United States, June 30, 1853, amounted to 4,407,010 tons; the amount of tonnage lost at sea during the year ending June 30, 1853, was 45,670 tons; and the amount condemned as unseaworthy was 9,608 tons-making 55,278 tons as the total loss for the year, or about 5th per cent. only of the whole. It is estimated that the sale of Maine vessels during the year to parties out of the State was equal to 81,816 tons at 50 dollars per ton; this shows an export trade in ships equal to 4,090,800 dollars. The amount of shipping built in the United States in 1853 is 295 ships, 95 brigs, 681 schooners, 394 sloops and canal boats, and 271 steamers, showing an aggregate of 1,710 vessels, amounting to 425,572 tons.

TRADE MARKS.

A decision of some importance to manufacturers was rendered a short time since in the Superior Court of Connecticut, whereby manufacturers are shown to be liable for imitating (or approaching the imitation of) trade marks or labels of other parties. The suit was brought at the instance of Messrs. J. and P. Coats, manufacturers and sellers of spool cotton, of Paisley, Scotland, against the Wellington Thread Company of Connecticut, for an infringement of the labels used on the spools. Messrs. Coats aver that—

They have succeeded in making their thread a first-rate article in the American market, and acquired great fame and reputation; that their said thread, as numbered from eight to forty, are threads of six cords, while those from forty to seventy are threads of three cords. And that the petitioners have ever been, and still are, accustomed to put up and sell said thread on wooden spools, containing two hundred yards each; each spool having on the end a circular label in black and gilt, with the following, amongst other words and figures, printed thereon, that is to say, "J. & P. Coats' best six cords, 200 yards."

They show that the Wellington Thread Company at Wellington, Tolland county, Connecticut, manufacture spool cotton also, but imitate the mark of Messrs. Coats and Co., so as to make it appear as "Coats' best six cord, 200 yards;" and that the article is really inferior, and contains only 150 yards. A referee, appointed by the Court in 1853, reported, "that he finds the facts alleged in the petition to be true." An injunction was granted by the Superior Court against the Wellington Thread Company, to prevent the further use of the "false and simulated labels and wrappers on their thread," under the penalty of ten thousand dollars. The Company was also taxed for the costs of suit.

THE TELEGRAPH.

The length of the telegraph lines in the United States exceeded 15,000 miles in 1852, and has since considerably increased. The most distant points connected by electric telegraph in North America are Quebec and New Orleans, which are 3,000 miles apart. When the contemplated lines, connecting California with the Atlantic, aud Newfoundland with the main continent are completed, San Francisco will be in communication with St. John's, Newfoundland, which is distant from Galway but five days' passage. It is therefore estimated that intelligence may be conveyed from the Pacific to Europe, and vice versa, in about six days.-Mr. Whitworth's Report (New York Industrial Exhibition.)

CRYSTAL PALACE.

The New York Industrial Exhibition was re-opened on May 4, 1854, as a permanent institution. It is stated that there were, probably, 20,000 persons present at one time in the morning, and a larger number in the evening. The building is now open every day, except Sunday, from 8 a.m. to 10 p.m. The charge for admission is 25 cents.-Cor.

Duty 30 per cent. val.

Ale, beer, and porter, in casks, or | bottles.

Argentine, albata or German silver,
manufactured or unmanufac-
tured.

Articles embroidered with gold,
silver or other metal.
Articles worn by men, women, or
children, of whatever material
composed, made up or made
wholly or in part by hand.
Asses' skin.

Balsams, cosmetics, essences, ex

tracts, pastes, perfumes, and tinctures for toilet or medicinal purposes.

Beads of amber, composition, or wax and all other beads.

Baskets and all other articles com-
posed of grass, ozier, palm leaf,
straw, whalebone, or willow, not
otherwise provided for.
Bay rum.
Benzoates.

Bologna sausages.
Bracelets, braids, chains, curls, or
ringlets, composed of hair, or of
which hair is a component part.
Braces, suspenders, webbing, or
other fabrics, composed wholly
or in part of India rubber, not
otherwise provided for.

Brooms and brushes of all kinds.
Cameos and mosaics, real or imita-
tion, when set in gold, silver, or
other metal.

London: Royston and Brown, 40 and 41, Old Broad Street, printers to the Consulate of the United States of America; of whom may be had forms for verification of invoices, &c.