INFLUENCE OF TEMPERATURE 57 



temperatures this peculiarity is insensible, but it 

 2 



2-5 



20 



I 2 ' 



00 



o 



15 



^Temperature 3 ^ 40 50C 



10 20 30 40 50 60 70C 



Temperature - * 



FIG. 12. 



increases rapidly with temperature. This is seen 



