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THE POPULAR SCIENCE MONTHLY 



Fig. 3. Meteoe Train seen at the Leiden Observatory, Holland. Observed 

 on November 13, 1865. From a picture by the observer, Dr. Van Hennekelen. A as 

 it appeared at 12 :45 a.m., B at 1 :13 a.m., C at 1 :24 a.m. 



rapid-moving meteors, and it may be that the formation of trains by 

 them is partly due to their high velocity. Many trains have been 

 observed which have been produced by meteors belonging to other 

 swarms than those that radiate from the constellations Leo and Perseus, 

 and thus it is possible for a persistent train, although an uncommon 

 phenomenon, to occur on any night during the year. 



