136 HISTORICAL INTRODUCTION TO CHEMISTRY CH. vn 



density measurements), Morley found the composition of water 

 by weight to be 



Oxygen : hydrogen = 7 '9396 : 1 ; 



whilst the weights of the oxygen and water gave the ratio 



Oxygen : hydrogen = 1'%3Q2 : 1 ; 

 mean, 



Oxygen : hydrogen = 7 '9394 : 1. 



