PRODUCTION OF SULPHITE PULP FROM SPRUCE. 11 
gguegea. aan 
shi [a_|_| [| bod chat 
Ub anaal el 
PImeey || 
oa Eee 
ESCoeme lag 
Ee 
vere lal a 0ul G cabl 
Caer 
gL LAY C4 
CULL 7 
BWyC Cy 
CLEC CA CF 
Bee mnae 
“LUTTE 
ALE ] 
eC | 
re 
ola core Male 
(Hgleala bala ae) Qc Gi Ons e 6 Oo 4 6 
Fig. 5.—Cooking curves for cooks 81, 86, 87, 88, and 89. 1, temperature; 2, gauge pressure; 3, gas pressure; 
4, steam pressure. 
TEMPERATURE °C 
PRESSURE — LBS. 
a 
a | TS | 
Al | 
Eee 
Fia.6.—Cooking curves for cooks 90, 91, 92, and 94. 1, temperature; 2, gauge pressure; 3, gas pressure: 
4, steam pressure. 
