CONTENTS. 



Page. 



Introduction 7 



Experimental work 8 



Material and process 8 



Steaming data 12 



Pulp-cooking data 15 



Treatment of the black liquor 17 



Distillation of oils obtained from the dry black liquor 17 



Constituents of crude pyroligneous acid 19 



Other experiments with the black liquor 20 



Examination of the crude wood turpentine 21 



Results of the distillation of rosin and of rosin and soda 21 



Fractionation of the oils from the black liquor 22 



Oils soluble in 9 per cent caustic soda solution 23 



Products obtained from lightwood 23 



Supply of waste resinous woods 24 



Yields from resinous woods 25 



Cost of waste resinous woods 25 



Conclusions 26 



5 



