THE COMPOUND STEAM TURBINE. Last year the whole of the lighting of the Newcastle Exhibition was effected by the agency of seventeen of these motors, of which four were spare, giving in the aggregate 280 electrical horse power. As the steam was provided by the authorities of the exhibition, it was good proof to the public that they had satisfied themselves that the consumption would not be extravagant... more...

CHITRAL, a native state in the North-West Frontier Province of India. The state of Chitral (see also ) is somewhat larger than Wales, and supports a population of about 35,000 rough, hardy hillmen. Previous estimates put the number far higher, but as the Mehtar assesses his fighting strength at8000 only, this number is probably not far wrong. Both the state and its capital are called Chitral, the... more...

GRAINS OF TRUTH BY BILL NYE A young friend has written to me as follows: "Could you tell me something of the location of the porcelain works in Sèvres, France, and what the process is of making those beautiful things which come from there? How is the name of the town pronounced? Can you tell me anything of the history of Mme. Pompadour? Who was the Dauphin? Did you learn anything of Louis XV... more...

GUSTAVE TROUVÉ. The accompanying portrait of M. Gustave Trouvé is taken from a small volume devoted to an account of his labors recently published by M. Georges Dary. M. Trouvé, who may be said to have had no ancestors from an electric point of view, was born in 1839 in the little village of Haye-Descartes. He was sent by his parents to the College of Chinon, whence he entered the École des Arts et... more...

STEAM ENGINE VALVES. By THOMAS HAWLEY. In considering the slide valve in its simple form with or without lap, we find there are certain limitations to its use as a valve that would give the best results. The limitation of most importance is that its construction will not allow of the proper cut off to obtain all the benefits of expansion without hindering the perfect action of the valve in other... more...

AFFECTION. General St. Amour.—This officer, who distinguished himself in the Imperial service, was the son of a poor Piedmontese peasant, but he never forgot his humble extraction. While the army was in Piedmont, he invited his principal officers to an entertainment, when his father happened to arrive just as they were sitting down to table. This being announced to the general, he immediately rose,... more...

FARCOT'S IMPROVED WOOLF COMPOUND ENGINE. In a preceding article, we have described a ventilator which is in use at the Decazeville coal mines, and which is capable of furnishing, per second, 20 cubic meters of air whose pressure must be able to vary between 30 and 80 millimeters. In order to actuate such an apparatus, it was necessary to have a motor that was possessed of great elasticity, and... more...

ITHE UNKNOWN QUANTITY Professor William James Maynard was in a singularly happy and contented mood as he strolled down the High Street after a long and satisfactory interview with the solicitor to his late cousin, whose sole heir he was. It was exactly a month by the calendar since he had murdered this cousin, and everything had gone most satisfactorily since. The fortune was proving quite as large as... more...

THE FRENCH SCIENTIFIC STATION AT CAPE HORN. In 1875 Lieutenant Weyprecht of the Austrian navy called the attention of scientific men to the desirability of having an organized and continual system of hourly meteorological and magnetic observations around the poles. In 1879 the first conference of what was termed the International Polar Congress was held at Hamburg. Delegates from eight nations were... more...

The inauguration of the statue of Philip Lebon, the inventor of lighting by gas, occurred on the 26th of June, at Chaumont, under the auspices of the Technical Gas Society of France. The statue, which we illustrate herewith, is due to the practiced chisel of the young sculptor Antide Pechine, who has perfectly understood his work, and has represented the inventor at the moment at which he observes a... more...