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28 : . MARINE REVIEW. [June 6 - AUSTRALIAN LIGHT-HOUSES. Although the greater portion of the Australian coast is remarkably. free from dangers to navigation, light-houses have been erected at every available point; hence the comparatively limited number of shipping dis- asters other than those occasioned by stormy weather.. The whole of the New South Wales coast is efficiently lighted, and when the service passes into the hands of the federal government, further improvements will be effected. Some of the lights are visible at a distance of 12 miles. The most important of the New South Wales light-houses is the Mac- quarie, at the entrance to Port Jackson, and which ranks as 'one of the largest and finest in the world. It is also the grandest example of elec- tric lighting of which the southern hemisphere can boast. The structure was begun March 1, 1880, and the light in connection with it brought into operation on June 1, 1883. The old light-house, which the new one has replaced, was built in 1816, and was the first structure of the kind in Australasia. It is equally interesting, and also illustrative of the enter- prise of the state, that the electric light was the first used for light-house purposes. The light is-of the first order, sixteen-sided, dioptric, holo- photal revolving white light, of the system of Fresnell, showing a flash of eight seconds in every minute, and having a range of 25 miles sea- ward. It is, however discernible for a considerably greater distance, ow- ing to the luminosity produced in the atmosphere by the electric beam before the direct rays become visible. It was constructed by Chance Brothers & Co., of Birmingham, England, under the-supervision of Mr. Jas. N. Douglas, engineer to the Trinity Board, London. From that gentleman's report of his final inspection of the apparatus, together with BURNISHINE {ys2'° THE MOST MARVELOUS METAL Words have not demonstrated the su- POLISH IN THE WORLD. periority of "pwst fn,| GALLOCK Packings over other makes. It has been done by their I I successful use on hundreds of thousands of Wil Polish oneines and pulps, and: for every known purpose on land and sea. This is the VERDICT OF ENGINEERS Hal Of Cold in all sections of the world, who have used GARLOCK PACKINGS. SES ae Metal, : Send for catalogue and samples to our nearest office. ---- _| THE GARLOCK PACKING CO. S335 F no matter which, Produces a wonderfully brilliant] oeyuine lustre on brass, copper, nickel and all metals, no labor required. Used on steamers all over the world. New York. Philadelphia. St. Louisi. Fiee samples on application. Boston:: Pittsburg. Denver. Chicago, Cleveland. San Franciseo.; a. Cc. PAU a & Co. MAIN OFFICES AND FACTORIES: 57 Dearborn St., CHICAGO, ILL.| PALMYRA, N.Y.; ROME, GA. WITHOUT IT. Contains NO ZINC nor any weaken- ing metal. | Send for Booklet with treatise on " Electrolysis of Condenser Tubes."' Benedict & Burnham Mfg. Co., mills ana Offices. Waterbury Conn. New York, 253 Bd'wy. Boston, 172 High St. a descriptive account by Dr. Hopkinson, one of the partners of the above: firm, the following extracts are taken: = After explaining that the work had been much prolonged beyond the intended date, owing to unavoidable difficulties and delays which had occurred in the casting of the various parts of the novel and _ special optical apparatus, Mr. Douglas goes on to state that 'the whole work has been completed, both as regards material and workmanship, per- fectly. I can confidently state that the Macquarie light is at the present moment the most efficient in the world.' Also, that he had "invented an improvement in oil and gas burners, by which a greater condensation of the focal light is effected than hitherto,' which he had "placed at the disposal of Messrs. Chance Brothers for the Macquarie light, free of royalty, and consequently the gas and oil burners for use during clear weather have, with flames of 1%4 in. diameter, an intensity of about 200 candles instead of 80 candles with the same diameter, as withthe old type of burner originally intended. When these flames are at the focus, there is a consumption with the 16-candle gas of about 40 cu. ft. per hour, and with good paraffin of about one pint per hour, and I estimate the mean intensity of the flashes from the apparatus at about 40,000 candles, or about five times the intensity of the flashes of the existing Macquarie light. With full power of the electric light at- the focus, the mean in- tensity of the flashes in the direction of the sea horizon is not less than five or six millions of candles. By a simple arrangement the change from gas light to electric light at the focus, or the reverse, can be effected in ten seconds, and the flames of the oil lamp can be substituted for the gas or electric light in nearly the same space of time." The Macquarie light-house is intended only to illumine half the horizon; it is therefore possible to make use of the landward rays by means of a dioptric mirror. This was probably the first instance of the use of a dioptric mirror for an electric light. Special adjustment was needed to attain the result in a satisfactory manner. The whole appara- tus is carried on a round pedestal, which offers the great advantage of enabling the keeper to enter without interfering with the rotation of the apparatus. Arrangements are made to burn either gas or paraffin oil, or to exhibit the electric light at full power or half power. When the electric light is in use there is always a second lamp in readiness for action. The practical result of the light-house has been to make the en- oe to Sydney harbor perfectly safe, except during the most violent weather. t Judge E. H. Gary, E. C. Converse, William Edenborn, Percival Roberts and D. G. Reid, members of the executive committee of the United States Steel Corporation, and Sir Edward Windsor-Richard and Arthur Keen of the English iron and steel firm of Quest, Keen & Caz Ltd., are on a tour of inspection of the properties of the great steel cor- poration. It is understood that the party will spend considerable time in the Lake Superior mining region. A Chicago correspondent says that the Weaver Coal Co., Marquette building, is preparing to push lake business in Maryland smokeless coal. This grade of coal is said to have no superiors and few equal as a steam fuel. The analysis announced for it is: Moisture, .989; non-combustible volatile matter, .706; combustible volatile, 14.204: fixed carbon, 76.451; ash, 7.650; total, 100. The portion of sulphur is .630. The Power Publishing 'Co., New York, has issued a book entitled "Central Station Exneriences," which is the series of narratives on the trials and tribulations of a steam engineer while learning to run an elec- tric station that originally appeared in Power. A particularly useful pump for boiler inspectors, marine engineers and boat owners generally, is that which is made by the Marine Iron Works, station A, Chicago, as illustrated on page 41 of their 1901 catalogue, which is sent free on receipt of request. ff FOR SALE. A new 125 H.P. Roberts high-pressure marine boiler, at a bargain. Immediate delivery. Write for particulars. James Beggs & Co., 9 Dey street, New York (City. June 13. THE CLEVELAND Double End Punch and Shear. The Cleveland Punch and Shear Works Co:. A very handy tool in a ship building plant or any shop where consider- able punching and shearing is done. BUILT IN ALL SIZES AND CAPACITIES. CLEVELAND, O.,-U.S, A;