24 



said he had detected traces of lead in almost every analysis of one class 

 of ancient bronze, and had come to the conclusion that it had been 

 purposely added to give toughness to the metal, an effect which it 

 produces if the quantity be small. 



The following table exhibits the results of Mr. Procter's analysis of 

 various articles in the Museum of the Yorkshire Philosophical Society. 



For the analysis of the bronze handle of an Etruscan patera, see 

 Report for 1857. 



