BY JAMES M. PETRIE. 141 



The fixed oil was dissoh^ed out by petroleum spirit, 0-166%. 

 Water removed in solution a part, which gave all the alkaloidal 

 reactions, and there was left 0-234% of insoluble resins. 



Volatile oil (vol. at 100°C.) 0-325% 



Fixed oil (sol. in petrol, spirit) 0-166 



Reaiiis (insol. in water) 0-234 



Alkaloid, etc. (diff. sol. in water) 0-325 



1-050 



Alcohol Extract. — From the residue, after petroleum spirit, and 

 ether, alcohol extracts 3-2% of solid matter. From this, water 

 removed a substance which gave a very persistent froth. Dilute 

 ammonia dissolved a considerable part, and from this solution, 

 when acidified, a brown deposit separated, mainly consisting of 

 resins soluble in dilute alkali. The water-soluble portion gave a 

 very pale green colour with iron alum, and gelatin solution gave 

 only a small precipitate. The tannins were precipitated by lead 

 acetate, and weighed, after deducting the lead oxide, 1"24%. 

 The filtrate, after removing the lead, was tested with Fehling's 

 solution, but no reducing substances were present either before or 

 after hydrolysis with acid, showing the absence of glucosides. 

 The alcoholic extract contains : — 



Part insol. in water — resins 1 • 



PbAppt. — tannins (chiefly) 1 24 



Other substances 0-96 



3-20 



Water Extract. — This contained 5% of material in solution. 

 From it was separated, mucilage and dextrin in very small 

 amounts. The amount of glucose, or reducing sugars obtained 

 by Fehling's solution, and weighing the CuO, was 1 %, and after 

 hydrolysis by boiling with hydrochloric acid for 20 mins., 1"53% 

 of glucose. 



Total carbohydrate by hydrolysis.... 153% expressed as glucose. 

 Reducing sugars 1 -QO ,, ,, 



Saccharose group 0-53 



