w York, made by Charles was the necessity for frequent scaling of the heating Dressler, from suggestions by Prof. Alfred Compton, feet. By optical illusions the depth is made apparently surfaces. However, they were effectually protected much deeper, the waters dashing, jumping, and gyrating is… … AN ELECTRICAL GYROSCOPE. shaft, through a small space above the theoretic sup- porting pivot, brings about the most marvelous’ me- IMPROVED METHODS IN HIGH-SPEED CHRONO- chanical movement yet discovered. The pendulum be- PHOTOGRAPHY. gins to rise to a horizontal position, as before, but by BY Dk.…
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