104 



Messrs. V. H. Yeley and J. J. Manley. 



Curve VI. Results at 14'2 from 66 to 80 per cent., with intersection 



at 70 per cent., and another (direction only shown) at 79 per cent. 



66 67 66 69 70 71 7a 73 74 75 76 77 76 79 00 



Percentages (Temp. > 



