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The Steam Turbine 201 As a matter of fact, it was put into service and for several years was in constant operation, running at 18,000 revolutions per minute, at which it gave out 10 horse-power. It was directly coupled to the dynamo which gave 5 electrical horse-power. When its term of utility was considered to have been com- pleted, it was presented to the South Kensington Museum, where it now enjoys an honoured resting- place beside the pioneer achievements of other inventors in various fields. The success of this first turbine was responsible for the construction of another, which was placed upon the small steamer Earl Percy, to supply current for sixty electric lights upon the vessel. This plant continued to run successfully and satisfactorily until the loss of the ship at sea a few years ago. The invention appeared at the period when the electric lighting of vessels was being taken in hand seriously, the advantages of this system of illumination being so overwhelmingly superior to the oil lamps which were then the vogue. As the turbine had established its value for the generating of the current, it is not surprising that the demand for installations upon board ship commenced to grow, and, in fact, constituted the most favoured field of application. But its suitability for land stations was not overlooked, and many plants for such work were laid down, in- cluding equipments for electrically lighting Lincoln’s Inn Hall and New Scotland Yard in the metropolis. As the new system grew in favour the inventor found the demand upon his time become more and more exacting. At last he came to the conclusion that it would be necessary, in the interests of the