393 



Nitrogenous Residue. 



The residue, after the removal of the resins by ether, was dried and powdered, 

 and was then treated with alcohol to remove any remaining resin ; and again dried 

 and treated with water to remove the gum. The residue, when dried, was a cream- 

 coloured powder, and when heated with soda-lime gave abundance of ammonia. 

 It thus agreed with the similar substance obtained from Araucaria Cunninghamii. 

 When dry it weighed o-8 gram, equal to o-2 per cent. 



The general composition of the oleo-resin of Agathis robusta may be stated 

 as follows : — 



Essential oil (by weight) 



Volatile acids (as acetic) 



Gum 



Reducing sugars 



Resin 



Nitrogenous residue 



Water, and undetermined by difference 



11-64 P^i" cent. 

 0-1055 



2-37 



0-62 



62-00 



0-20 

 23-0645 



100-0000 



2. Agathis Palmerstoni, 



F.v.M. "Victorian Naturalist," June, 1891. 



This recently described Pine occurs on the Coast Ranges of North 

 Queensland, but it was found impossible to procure material for investigation It 

 is said to be a tall tree, and Mueller states that it differs from A . robusta in that 

 its leaves are never lanceolate, are much smaller, narrower, and always obtuse. 

 The cones are much smaller, narrower, and the scales more numerous than anv 

 other species, its nearest ally being A. Moorei of New Caledonia. 



