A section of a submarine cable which was laid in 1881 between Cienfuegos and Santiago in the Caribbean Sea, has recently been raised. A few months ago, the durability of cables covered with India-rubber was questioned, and it was decided to raise the Santiago cable and submit it to tests. The line was taken up in 1,350 fathoms of water and was tested at the works of Messrs. Hooper at Millwall. The result of these tests showed that after twenty years' use, the core was still in perfect electrical condition. The insulation was good and the copper conductor had not been affected by any sulphur in the rubber.

Britannic, the White Star liner, has made its last voyage. It was towed by a steam tug from Belfast to Bremen, where it will be turned into scrap.

The first experiments with nickel plating were attended with great difficulty on account of the peeling off of layers of electro-deposited nickel. This trouble has been more or less overcome, and various methods are used by platers to get a firm deposit. Thomas A. Edison has recently taken out a patent for a method by which a thin electrolytic deposit of nickel on steel or iron can be made to adhere firmly. After the electrolysis is completed, the nickel-plated pieces of iron and steel are put into a non-oxidizing atmosphere, and sufficiently heated to weld the film of nickel to the iron or steel backing. For this purpose, a bright yellow heat is required. The contact thus produced between the nickel and the iron or steel is so perfect that sheets plated in this manner can be made into different articles by means of the drawing or stamping process, without cracking or flaking the film.

MAGAZINES

(Continued from page 39)

Electrical World and Engineer, January 23, 1904 At a recent meeting of the Technology Club of New York, Dr. G. F. Kunz of Tiffany's gave an interesting address on his own researches on radium, illustrated with experiments. A number of specimens of radium were exhibited with a demonstration of their activity. Dr. W. J. Morton discussed radium in its relation to medicine, its usefulness in the cure of cancer.

A discussion of radio-activity and radiation by Dr. Louis Bell states that for a complete solution of the problems presented a better knowledge of ordinary radiation is necessary than is yet available. He also suggests a careful study of the chemistry of radium and kindred subjects.

An interesting article by Mr. C. J. Spencer shows the importance of measuring the shape of alternating-current waves, and suggests a method by means of which they can be photographed directly. This apparatus is a modification of the oscillograph of his own construction, in which the distinctive feature consists in using an alternating-current arc lamp of known frequency for marking the time, the lamp being used as a source of light for the reflected photographic

ray.

The Automobile Show which took place recently in New York is described as a brilliant success. Among some of the exhibits were those of the Edison Storage Battery Co., The Electric Storage Battery Co., The General Electric Co., The Baker Electric Vehicle Co., The Electric Contract Co., etc. A separate article is devoted to the General Electric exhibit. Of much interest to electrical engineers is the increase of electric automobiles, nearly 20 per cent of those exhibited being of this type.

Among other articles of interest are a description of the plant of the Columbus Power Co., of Columbus, Ga.; The New Automatic Telephone Exchange, Grand Rapids, Mich.; a discussion of the Institute meeting in Chicago last month, in which the subject of storage batteries was taken up; The Electric Drive as Applied in a Modern Machine Shop, etc. (Continued on page 96)

Graduate and Student Notes.

(Continued from page 90)

C. Webster, of Albion Park, Queensland, is much interested in engineering matters in general and particularly in vapor engines, being at present employed in a factory where marine naphtha engines are made.

W. C. Saxby is engaged in sheep farming at Featherston, Wairarapa, New Zealand, but is giving much attention to electricity; and since taking up the electrical course, he has been able to repair and put in good working order a small engine which had previously given much trouble.

THE WORLD TO-DAY POCKET ATLAS is a marvel. It contains 574 pages (size 32x54.in.); 105 full and double page maps in colors; population of over 40,000 places, according to latest census.

An Atlas is indispensable yet the large volumes are seldom used because they are cumbersome and not readily accessible. This Atlas is suitable for the desk,schoolroom, or can be easily carried when traveling and it answers every purpose of the larger volumes. It is handsomely bound in cloth, stamped in colors and retails at $1.00.

We offer this famous Pocket Atlas free with a four months' trial subscription to

THE WORLD TO-DAY

The World To-Day is one of the largest and handsomest monthly magazines published. It gives monthly a complete record of the progress of the world in every department, and a large number of leading articles on subjects of current interest. It has a regular staff of over 50 Editors and Contributors, and is founded on a new idea that has proven exceedingly popular. It is forceful, aggressive and reliable. No progressive person can afford to do without it.

144 pages and over 125 beautiful illustrations every month. $3.00 PER YEAR. 25cts. A COPY. For the purpose of introducing THE WORLD TO-DAY to new readers we make the following

MAGAZINES.

(Continued from page 94)

The Engineering Magazine.

The rapid development in combustion engines, both for automobiles and large units, brings forth many interesting articles in the technical press. "Lines of Progress in the Efficiency of the Combustion Motor" reviews the efforts of engineers to produce a continuous-combustion engine. After discussing the ideas governing the developments of the reciprocating engine (both steam and gas), the author, Mr. Warren, proposes an apparatus for uniting the merits of various existing power generators. Kerosene oil is used as fuel. The suggestion should lead to interesting results.

"The Alcohol Motor," by Henri Dupays, is another article along the line of internal-combustion engines. It first discusses the kinds and properties of alcohols and then their applications.

"The Mechanical Equipment of Apartment Houses" is the title of an article containing much that should interest those dwelling in such buildings, as well as the owners. The piping, the heating system, the engines, boilers, refrigerating apparatus, and electrical machinery, are explained in such a manner that the layman can read them with profit. Of these, the refrigerating section is perhaps the best.