3/. The characteristic structure of the barks shows anatomical features distinctive 

 from that of any other Austrahan Conifer. 



38. The results here recorded further emphasise the great A-alue of these trees for 



forest cultivation. Being endemic to the Continent, they would pro\dde 

 a splendid supply of soft-wood timber for future use by proper syh'iculture. 



39. The oil obtained from the latex of A . Cunninghamii contained a hydrocarbon 



of the CioHjo series, and possibly of the C,oHjs also. 



40. Some of the chemical compounds of this plant are CA-idently formed, or at an\- 



rate the process completed, in the root portion of the tree, as the supply 

 continued after the upper portions of the trees had been cut down. 



41. The resin from the latex of A. Cunninghamii closely approaches, in appearance, 



the sandarac resin from the Callitris. It consists largely of two acids, one 

 of which is identical ^^"ith one of the acids in the resin of Agathis robiista. 



42. [Manganese was present in the latex of A. Cunninghamii and wSlS precipitated 



by alcohol together ^^ith the gum. It changed, however, to the higher 

 oxide on dr\-ing the gum precipitate. 



43. The gum of the latex closely approaches that of gum-arabic, and differs in 



some respects from that of A. Bidicilli. 



44. The exudation of .4. Bidwilli consists almost entireh' of a carbohydrate aUied 



to ordinary gmn. Although soluble in water, it was rendered quite insoluble 

 b}^ agitation ^ith ordinarv ether, a reaction which does not appear to take 

 place with the gum of A. Cunninghamu. 



45. Resins and essential oils were almost absent in the exudation of A. Bidwilli. 



Agathis. 



46. That a close botanical alliance exists between the Austrahan species A. robiista 



and those of the Pacific Islands and of Xew Zealand. 



47. The microscopical sections of the timber show features which bear some 



resemblance to those of Araucaria, but }"et have some points of difference. 



4S. The exudation of this tree consists, of an oleo-resin, containing some gum, and 

 the essential oil is practically identical \< ith ordinar\- American oil of 

 turpentine. 



49. The exudation also contains a manganese compound precipitated ^\^th the 



gum, and it thus agrees, in this respect, with the latex of Araucaria 

 Cunninghamii. 



50. The resin consists principally of two new acids. 



