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METEOR TRACES ON A PHOTOGRAPHIC PLATE OF THE REGION OF THE 



MILKY WAY ABOUT ^ CYGNI. 



The photograph was taken by Dr. Max Wolf, of Heidelberg, on the 7th September, 1891. It shows that one of the 

 meteors varied irregularly in brightness in its passage through the air. The stars and nebulous matter of the Milky Way are 

 shown as photographed, with an exposure of one hour, in the focus of a portrait lens of 2i inches apertm-e and "'S inclics 

 focal length. The plate is an enlargement from a part of the original negative. 



