THE BOOK OF THE LANTERN. 



249 



lantern was used in an American Law Court to demon- 

 strate to a jury the manner in which a document had been 

 tampered with by a forger. Illuminated by a strong side 

 light, the magnified image showed clearly where the tex- 

 ture of the paper had been disturbed, both by erasure and 

 by the action of chemicals. 



