VII 



THE BURNING OF INFLAMMABLE AIR 



129 



Volume... .. 2 1 568 '4 c.c. Weight ... 28*4308 grams. 



Temperature ... 17-48 C. Corrected ... I7'4OC. 



Barometer .. 745 '91 nim. Corrected ... 746*29 mm. 



Weight of I litre of oxygen at sea level in 45 



latitude, at o C. and 760 mm. pressure ... 1*42883 grams. 



The mean of three complete series of experiments, in which 

 different methods were used for measuring temperature and 

 pressure, gave the value 1 42900 '000034. 



FIG. 29 MORLEY'S APPARATUS FOR MEASURING THE DENSITY 

 OF OXYGEN. 



The density of hydrogen was determined in a different 

 way, both on account of the difficulty of weighing 1*8 grams 

 of gas in a globe 600 times heavier, and also because of the 

 risk that this small weight might be increased appreciably 



