[satterly-burton] hydrogen. and HELIUM 215 



As a result we concluded that under the conditions of the experi- 

 ment the percentage of hydrogen could be raised to twenty-six per 

 cent before the mixture become inflammable, but that if the per- 

 centage exceeded twenty-eight the mixture would burn. This result 

 was communicated to the Admiralty on December 20th, 1917. 



University of Toronto 



