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ladder to get back by. The picture shows how he may be lowered, or hoisted, in perfect safety to the deck. The ambulance is an ordinary canvas-stretcher for conyaying the wounded ; but it is here provided with sundry broad and strong pieces of webbing or canvas, cunningly adjusted so that the man is supported in every part. By means of a short chain to the head, and a long rope to the foot, of the stretcher, he is kept at a convenient angle for hoisting, while
Self-Contained GASOLINE-ELECTRIC Car. the men in attendance carefully guide the stretcher clear of the will contain its own motive power and side. The saving of pain and worry to can operate independently of overhead an injured man by this means, will be trolley lines or power stations. It is recreadily appreciated. To be slung in a ognized that a car of this type would rope and dragged up under such circum- prove very useful for operating in sparsestances, is not a process to be conten ly settled localities where the traffic is plated with any degree of delight. not sufficient to warrant the building of
a steam railway or an overhead trolley
system. It would also prove useful in Self-Contained Rail. operating on trolley roads at night after road Cars
the power station is shut down.
One of the most recent cars of this THERE have been from time to time type is shown in the accompanying illus
numerous attempts to provide a rail- trations. The equipment consists of a way car suitable for light work which four-cylinder gasoline engine connected
to an electric generator, the latter supplying current for the motors cn the car trucks. It also contains an air-compressor and a storage battery. This car has been in use on the lines of the St. Joseph Valley Traction Company for about eight months, during which time it has covered over 12,000 miles, making three trips daily and hauling from one to three 19-ton passenger coaches. The distance covered per trip is about electrical power house. down through the water at its mark, the
22 miles, in which four New TYPE GASOLINE RAILROAD MOTOR-CAR. View of interior, with seating accommodations for seventy-five passengers.
stops are made. The
This car was built by F. M. Hicks & Conipany of Chicago, is 34 feet long, and weighs about 90,000 pounds, of which 40,000 pounds is machinery. The success of the car has led to the design of a 60-foot car having passenger, baggage, and engine-room compartments.
literally a compass in the desert. No matter how glaring the rays may be that are reflected from the soil in which it grows, it tilts its head to the southward under the still more potent influence of the sun's direct rays. Travelers in the sandy plains of Arizona and New Mexico hail the sight of this plant as a great boon, for its pulpy composition contains much water. The jackrabbit also makes practical use of this fact.
average consumption of gasoline has Gold from a Stack
THERE is an old saying that “gold A useful feature of this car is the
- is where it is found,” no difference equipment of storage batteries, which are where that may be. This was very reof sufficient capacity to operate the car. cently demonstrated in the little town independently of the engine for a distance
of Vallejo, California. In this instance, of about 12 miles, so that, in case ob
the precious metal was found in a chimjections are made by the city authorities ney. For several days the men employed to operating through the cities with the at the great Selby Smelting Works logasoline engine, the latter could be shut cated near Vallejo, had been engaged in down and the car run entirely by the cleaning out one of the big stacks. There storage batteries. The makers of this was found to be a large quantity of soot car report that from the results of a and other refuse in the stack. A thornumber of tests it has been found that ough cleaning-up resulted in the saving the cost of operating from an electrical of over $7,000 in gold. The smelter standpoint is less than that of operating company is now planning to put in appaa heavy interurban car directly from an ratus in the chimney to catch and save
the fine, light gold which they are satis- mally handed over by the contractors, fied has heretofore been lost, costing the Messrs. Pauling & Company, of Loncompany in the aggregate a great many don. The bridge is 260 miles north of thousands of dollars.
the famous cataract known as the Victoria Falls, and in the region in question
no less than seven bridges had to be conNotable African Bridge structed. Some rapid rail-laying was
also effected in the vicinity, under the IN connection with the great scheme of superintendence of Sir Charles Metcalfe,
opening up the Dark Continent to civ- the consulting engineer, a mile a day beilization by means of the iron horse, ing the average, though on one occasion some important bridge work has lately · the contractors managed to lay 534 miles been completed across the Kafue river in ten hours. near the Broken Hill zinc mines in Rhodesia, the present rail-head of the Capeto-Cairo line. The bridge in question is Submarine Destroyer remarkable from the fact that it is the longest of the kind in Africa—roughly A NEW naval terror in the shape of a 1,500 feet—and from the further fact of submarine destroyer has just been its having been completed in record time, invented by Lewis Nixon, a graduate of all the massive iron work used in its con- Annapolis and former naval officer, then struction having been supplied from shipbuilder, and now an official of the England to the order of the contractors. Carbon Steel Works of Pittsburg, Pa. The bridge consists of thirteen spans of The essentials of the new terror of the 100 feet each, and stands on concrete pil- seas are being kept a secret until certain lars built by the caisson system in six patent-rights have been granted by diffeet of water. Much of the material had ferent countries. It is known, however, to be carried by ox-wagon for a distance that the destroyer of submarines, as of nearly 200 miles; and the actual work planned by Mr. Nixon, is scarcely larger
This invention should also prove of great
rine. It is admitted that the submarine lisions. Off Newport, R. I., the approach has to keep within twelve or fourteen feet of a submarine torpedo-boat has been deof the surface to be of any damage to the termined from the noise of the craft's enemy, and it will be an easy mark for machinery while still two miles away. the destroyer shooting in its wake di- Neither wind nor storm can affect the rectly overhead. It is claimed that the reliability of this system. It is, therenew destroyer can hit the mark 150 feet fore, . far superior to the untrustworthy below the surface, a depth to which no air-sound signals. . submarine could possibly sink with security, forty or fifty feet being as deep as safety will permit. At greater depths Snow Locomotive than that, it is said, the pressure of the water is so great as to force the water THE accompanying photographs show through the seams and boft-holes..
a unique form of traction engine or locomotive which differs entirely from
the usual vehicle for use on snow or ice. For Sailors' Safety
In nearly all cases, sprocket or driving
wheels are used, which, with their steel TO warn vessels of the proximity of teeth, cut into the frozen ground and
dangerous shoals and rocks be- thus propel the vehicle. In this locomoneath the water's surface, a system of tive, however, heavy chains are provided electric bells is being inaugurated. These on each side of the engine, which, like bells are suspended 25 feet under water, an endless belt, move over two wheels and are rung from the shore by electric- and by contact with the ground push the ity, or are attached to buoys and operated vehicle. forward. These chains are 12 by the energy of the waves. A telephonic inches wide and 28 feet long. Within apparatus is provided in the ship's hold, these, another pair of smaller chains are so that even in rough weather, the warn- provided, which run over smaller sprocking may be borne from 4 to 12 miles. ets.
The engine is of the geared locomotive type, often used for logging; and the power from the four vertical cylinders is transmitted by spur pinions on crankshafts to pinions of driving shafts. On the rear of the latter, are attached bevel pinions which mesh in large gears running on quills. The power is then carried through intermediate gears to the rear sprocket.
The speed of this locomotive is about four or five miles an hour, and the power developed is about 100 horse-power. These engines were put in service last winter, and worked successfully even in rough country. They will handle from seven to ten heavy logging sleds.
Latest in Cycles A NOVEL bicycle has been built in
London, which has been pronounced "as comfortable as a rocking chair.” It is fitted with an anti-vibrating easy-chair-like saddle which affords wonderful relief to a tired back, and which proves a luxury when coasting down long hills. The ladies' machines are meeting with particular favor. They are of exactly the same construction as are the machines built for men. The illustration gives some idea of the comfort found in these new bicycles.
New TYPE OF BICYCLE WITH CHAIR-LIKE SADDLE,