158 BULLETIN OP THE 



This author has shown that his theoretical formulae agree 

 closely with the results of experiments made upon rapidly-moving- 

 railroad trains. We have, however, in the case of a meteor, far 

 greater relative velocities than any that have been artificially pro- 

 duced for experimental purposes, and had we any accurate mea- 

 surements, we might be able to learn something with regard to 

 the accuracy of theoretical investigations, or might possibly learn 

 something with regard to the absolute intensity of the individual 

 noises occurring at the surface of the meteor. 



Failing to obtain accurate data, we may remark that it re- 

 quires only comparatively feeble noises distributed along the 

 entire path of the meteor in order to produce, by their concen- 

 tration at the observer's station, a sound equal to that of loud 

 thunder. 



In the following table we have collected most of the data 

 relating to the noises that accompanied the meteor. 



The following report to have heard no sound : — 



( 1 ). Danbury, Connecticut. 



( 4 ). W.- F. Madlem, Ephratah, Pennsylvania. 



( 5 ). Gr. R. Rossiter, Marietta, Ohio. 



( 6 ). F. A. Curtis, Newark, Delaware. 

 ( 10& ). Anonymous, Baltimore, Maryland. 

 (11 ). W. Allan, Owing's Mills, Maryland. 

 ( 16 ). C. H. Jourdan, Emmit.tsburg, Maryland. 

 ( 18 ). W. H. Zimmerman, Chestertown, Maryland. 

 ( 42 ). G. D. Smith, Marion, Virginia. 

 (43). T. E. Converse, Woodstock, Virginia. 

 ( 46 ). J. J. Barrick, New Castle, West Virginia, 



Besides these, many others who heard no sound 

 are omitted, since others from the same places heard 

 the sounds distinctly, as described in the following 

 abstracts : — 



(2). Mercersburg, Franklin Co., Pennsylvania. 



Noise accompanying its passage like a hissing fire- 

 cracker. [Similar reports with reference to other 

 meteors have usually been considered as an illusion 

 on the part of the observer, as was probably the 

 case also on the present occasion.] 

 (3). Shippensburg, Pennsylvania. 



Interval 2 seconds ; rushing, rolling sound, like an 

 approaching storm. 

 ( 7 ). New Castle, Delaware. 

 Subdued rushing sound. 

 ( 8 ). Milford, Delaware. 



Explosion like a distant cannon. 

 (10a). Baltimore? Maryland, 



Followed by sound like that of 100-pound Parrott 

 conical shell. 



