LECTURE III 



PRODUCTS: WATER FROM THE COMBUSTION- 

 NATURE OF WATER A COMPOUND- 

 HYDROGEN 



I DARE say you well remember that when we parted we 

 had just mentioned the word "products" from the 

 candle ; for when a candle burns we found we were able, 

 by nice adjustment, to get various products from it. There 

 was one substance which was not obtained when the candle 

 was burning properly, which was charcoal or smoke, and there 

 was some other substance that went upward from the flame 

 which did not appear as smoke, but took some other form, 

 and made part of that general current which, ascending 

 from the candle upward, becomes invisible, and escapes. 

 There were also other products to mention. You remember 

 that in that rising current having its origin at the candle 

 we found that one part was condensable against a cold spoon, 

 or against a clean plate, or any other cold thing, and an- 

 other part was incondensable. 



We will first take the condensable part, and examine it, 

 and, strange to say, we find that that part of the product is 

 just water nothing but water. On the last occasion I spoke 

 of it incidentally, merely saying that water was produced 

 among the condensable products of the candle ; but to-day I 

 wish to draw your attention to water, that we may examine it 

 carefully, especially in relation to this subject, and also with 

 respect to its general existence on the surface of the globe. 

 Now, having previously arranged an experiment for the 

 purpose of condensing water from the products of the 

 candle, my next point will be to show you this water; and 

 perhaps one of the best means that I can adopt for showing 

 Its presence to so many at once is to exhibit a very visible 



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