which in- where visitors were specially invited to witness a trial ing solution where the light has not acted. It will be crease in diameter like mill pond waves. To cause the and when the disappointment was most crushing, but observed that no rolling up with printing ink is neces- light rings and… … Fig. 5.-BEATS. Fig. 4.-RE-ENF0RCEMENT. "The actual measure of the failure, Fig. 2.-INTERFERENCE. as shown by calculation, is as follows : The first blow represented a perforation of 18'7 plate is next strongly heated until the coating assumes the slide may be projected, one being superposed on the…
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