﻿SO" 



5 c» 



Fig. 3. 





-■ e F' 





40 c " 



Fi»* . . 



^-r=-.A 





30<=" 



r 









20 c ™ 



1 









, c» 



r 



















0' 1 HO" ,-iC Jll.i '!; 



Chart sTurtving the. margins vftiie, ojyaque, field 

 in, ter-ms vf'tlxe- actuating steam* pressure, aria, 

 five, car- terrujerature,. 



Chart shewing die margins oftlbe, opaque-Held 

 in/ ter-ms of the- actuxrting steams pr-essur-e, aruZ 

 t/te, air' temper nun -c . 



Chart showing tfie, margins of'llw. opaque, field, 

 in, terms oftfte, actuating steam, pr-essure. and, 

 tJie, ait- temrierature, . 



Chart \Jioiving tJce. margins offfie. opaque, field in, terms of 

 tJir activating steam,pr-essur-e, and, the, air- temperature.. 



T 



Variation, of five, opaque nuzrvnrc due, to a, change, ofebust contents. 

 Diagram,. 



ftlmrarm. Bros IitA. 



