A Tiny Toy. —The smallest engine in the world is said to be in the possession of Mv. John Penn, of Greenwich. It stands on a three-penny piece, although jt really covers loss, for its base only measures three; eighths of an inch by three-tenths. So small are s glass to see their form. ' .. - weight of the model is less than a threepenny piece. It works admirably, and, when working, its crank shaft performs from 20,000 to 30,000 revolutions per minute. Tim Tisiahu Eueakwatkc. —In Monday’s “livening Telegraph” the following appears The occurrence at the Breakwater this morning should convoy a gentle instruction concerning carrying on blasting operations in future in too close vicinity to the structure. It is not found that a certain rock is in the way until the structure is carried out in the solid till within a few feet of the impediment, and then a charge of dynamite is put down to remove the obstruction. The charge is put down within six feet of the solid work. The explosion takes place, and a rosnlr, pot intended, is that the Breakwater is shaken from end to end in a way it could not bo by the heaviest sea, and a fissure a couple of inches wide opens between the last two sections. Wo doubt it will be said openings have taken place between all the sections. This is very well in its way, but it is no reason why t]io structure should be unnecessarily shaken from end to ond. A little plastering with cement has certainly hidden much, hut on the principle that prevention is better than cure, it surely would be advisable that dynamite explosions should take place moi’Q in advance of the concrete. that they require a powerful
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