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THE "HEAT WAVE" OF 1892.
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a mere coincidence that our magnetic observatories exhibited considerable disturbance the next day, and that brilliant auroras were noted. The whole communication was of such an interesting description that we are not surprised to hear that a vote of thanks was passed to Professor Hale amid much enthusiasm. It is quite plain that we have yet much to learn concerning the effect of the sun on things terrestrial. This new method, in which Professor Hale has extended and improved the processes of his predecessors, is full of hope for the future.
