32? 



50 = 



N 30;l 



iZOl 



wo 



I 90 



1 80 



1-70 

 1 60 



t _ 



J50 

 |_40 



|so 



120 



=i _ 



lio 



t- 



FIG 289. 



FIG. 290. THERMOMETER SCREEN. 



FIG. 231. THERMOGRAPH. 



