202 



ROYAL SOCIETY OF CANADA 



s '^i o 



•^ QQ O 



wo es 800 



90 20 74C 



''0 



$0 15 660 - 



SO 



40 10 6Z0 



20 5 560 



SCO 



Fig. y 



A Readings of Thermocouple 



S " " Gauge 



C " " Calorimeter 



