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not be continued with the lead, and flill 

 lefs with the tin, on account of the violent 

 explofions excited by their touching the 

 water. I made a great number of different 

 experiments on both thefe metals ; but, for 

 the fake of brevity, I fhall only mention 

 the principal. 



When water was let fall, drop by 

 drop, on melted tin in the crucible, it ex- 

 ploded with a loud noife, and pieces of the 

 metal were thrown to the diftance of two, 

 three and four feet. If fo much water was 

 poured as to form a thin covering over a 

 part of the furface of the tin, the detona- 

 tion increafed in proportion, and a great 

 part of the metal was thrown out, with a 

 loud explofion, to a confiderable diftance 

 from the crucible. Not the leaft appearance 

 of any vaporous fume was obfervable. 



Approaching as near as this dangerous 

 experiment would permit me, and attentive- 

 ly watching the progrefs of it, I obferved, 

 that as often as the drop of water touched 



the 



