371 



The second type of- venation is characteristic of the species which yield oils consisting of pinene and 

 cineol : the oils richest in cineol are obtained from leaves having this venation. It is well shown in such 

 species as E. globulus, E. Bridgesiana, E. goniocalyx, E. Smithii, &c. Oils derived from species with this 

 venation do not contain phellandrene. As the lateral veins are farther apart than are those of the first 

 group, more room for oil-glands is available, so that, as a rule, a greater yield of oil is obtained from the 

 members of the second group than from those of the first. 



The third group contains the species which yield oils in which the terpene phellandrene is an important 

 constituent." 



P. R. T. Baker and H. G. Smith, 1920. " Research on the Eucalypts." Second 

 Edition of the 1902 work. 



I will confine my essential comments to this edition, as it contains the latest 

 and most comprehensive pronouncements of the authors. The notes in square 

 brackets are mine. 



[Of the species figured, (Plates 5-11) E. corymbosa and E. botryoides fall in 

 Group I ; E. globulus, E. Smithii, E. Australiana (radiata) fall in Group III, Class (6) ; 

 E. Sieberiana and E. dives fall in Group VII, Class (b.) The other Groups and Classes 

 are not represented by similar figures. See below, p. 376]. 



Group I. — In this Group are placed the following Eucalypts yielding an oil 

 consisting largely of Pinene, without phellandrene. Cineol is almost or quite absent : — 



1. E. calophylla. 12. E. saligna var. pallidivalvis 



2. E. diversicolor. (grand is). 



3. E. tesselaris. 13. E. nova-anglica. 



4. E. trachyphloia. 14. E. acaciaeformis* 



5. E. terminalis. 15. E. Rydalensis. 



6. E. corymbosa. 16. E. carnea. 



7. E. intermedia. 17. E. dextropinea. 



8. E. eximia. 18. E. nigra (In Group V, 1st Edn.) 

 . 9. E. botryoides. 19. E. laevopinea. 



10. E. robusta* 20. E. phlebophylla. 



11. E. saligna. 21. E. alpina. 



[Nos. 1, 2, 12, 14, 15, 16, 18, 20 and 21 are not in this Group in 1st Edition]. 



Group I. — [Nos. 1, (4-8) belong to the Corymbosae (Bloodwoods.) Nos. 17-21 

 belong to the Renantherse. The remainder include Swamp Mahoganies, Blue and 

 Flooded Gums (of eastern Australia]. 



* In the oil of this species traces of phellandrene were detected, nevertheless it is practically a pinene oil, so has 

 been placed in this Group. (E.T.B. and H.G.S.). 



