162 LETTERS ON NATURAL MAGIC. 



four trumpets T,T,T,T, with their mouths out- 

 wards. 



The apparatus now described was all that was 

 visible to the spectator ; and though fixed in one 



spot, yet it had the apearance of a piece of sepa- 

 rate machinery, which might have occupied any 

 other part of the room. When one of the spec- 

 tators was requested by the exhibitor to propose 

 some question, he did it by speaking into one of 

 the trumpets at T. An appropriate answer was 

 then returned from all the trumpets, and the sound 

 issued with sufficient intensity to be heard by an 

 ear applied to any of them, and yet it was so 

 weak that it appeared to come from a person of 

 very diminutive size. Hence the sound was sup- 

 posed to come from an invisible girl, though the 

 real speaker was a full-grown woman. The in- 

 visible lady conversed in different languages, sang 

 beautifully, and made the most lively and appro- 

 priate remarks on the persons in the room. 



This exhibition was obviously far more won- 

 derful than the speaking heads which we have 



