CHEMISTRY OF THE EIGHTEENTH CENTURY. 349 



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of a bottle, that this flame is accompanied by no smoke, for the part 

 of the saucer touched by the flame remained particularly white, only 

 it was wetted with drops of a liquid like water, which indeed appeared 

 to me to be nothing else than pure water" He did not propose any 

 explanation of this deposit of water in this experiment, which appears 

 to have been made in 1776. This experiment is always shown on the 

 lecture-table in courses of experimental lessons in chemistry, and the 

 more modern arrangement of the apparatus shown in Fig. 171 renders 

 the experiment much more convincing. The hydrogen gas is generated 

 in the bottle B, and before arriving at the jet where it is burnt, it 



