100 



Messrs. V. H. Veley and J. J. Manley. 



X. Description of Curves. 



rve /.Results at 14'2 from 14 to 26 per cent., with, intersection 

 of lines at 19 '6 per cent., the values from 19 '6 to 21*5 per cent, on a 

 lower or intermediate line. 



' I 



13~~14~-T5~~I6~ 17 16 19 2O 21 22 23 24 25 26 



Percentages (Temp. 14-2^. 



